Home / 748,869,857.40-1,123,304,786.10-340,723,169.40

Finding the Fourth Proportional to 748,869,857.40, 1,123,304,786.10 and 340,723,169.40

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Solution

The fourth proportional to 748,869,857.40, 1,123,304,786.10 and 340,723,169.40 is: 511,084,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,869,857.40 : 1,123,304,786.10 = 340,723,169.40 : x
  2. Step 2: Convert to fraction form
    748,869,857.40/1,123,304,786.10 = 340,723,169.40/x
  3. Step 3: Cross multiply
    748,869,857.40x = 1,123,304,786.10 × 340,723,169.40
  4. Step 4: Simplify right side
    748,869,857.40x = 382,735,966,922,180,992
  5. Step 5: Solve for x
    x = 382,735,966,922,180,992/748,869,857.40
  6. Step 6: Final answer
    x = 511,084,754.10

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Half scale
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Double scale
Find fourth proportional to 748,869,858.40, 1,123,304,787.60 and 340,723,170.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.