Home / 869,615.80-1,304,423.70-308,577.40

Finding the Fourth Proportional to 869,615.80, 1,304,423.70 and 308,577.40

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Solution

The fourth proportional to 869,615.80, 1,304,423.70 and 308,577.40 is: 462,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,615.80 : 1,304,423.70 = 308,577.40 : x
  2. Step 2: Convert to fraction form
    869,615.80/1,304,423.70 = 308,577.40/x
  3. Step 3: Cross multiply
    869,615.80x = 1,304,423.70 × 308,577.40
  4. Step 4: Simplify right side
    869,615.80x = 402,515,673,844.38
  5. Step 5: Solve for x
    x = 402,515,673,844.38/869,615.80
  6. Step 6: Final answer
    x = 462,866.10

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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.