Home / 869,425.90-1,304,138.85-587,416.30

Finding the Fourth Proportional to 869,425.90, 1,304,138.85 and 587,416.30

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Solution

The fourth proportional to 869,425.90, 1,304,138.85 and 587,416.30 is: 881,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,425.90 : 1,304,138.85 = 587,416.30 : x
  2. Step 2: Convert to fraction form
    869,425.90/1,304,138.85 = 587,416.30/x
  3. Step 3: Cross multiply
    869,425.90x = 1,304,138.85 × 587,416.30
  4. Step 4: Simplify right side
    869,425.90x = 766,072,417,953.26
  5. Step 5: Solve for x
    x = 766,072,417,953.26/869,425.90
  6. Step 6: Final answer
    x = 881,124.45

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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.