Home / 869,665.40-1,304,498.10-238,578.20

Finding the Fourth Proportional to 869,665.40, 1,304,498.10 and 238,578.20

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Solution

The fourth proportional to 869,665.40, 1,304,498.10 and 238,578.20 is: 357,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,665.40 : 1,304,498.10 = 238,578.20 : x
  2. Step 2: Convert to fraction form
    869,665.40/1,304,498.10 = 238,578.20/x
  3. Step 3: Cross multiply
    869,665.40x = 1,304,498.10 × 238,578.20
  4. Step 4: Simplify right side
    869,665.40x = 311,224,808,601.42
  5. Step 5: Solve for x
    x = 311,224,808,601.42/869,665.40
  6. Step 6: Final answer
    x = 357,867.30

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Double scale
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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.