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Finding the Fourth Proportional to 585,021.10, 877,531.65 and 407,728.30

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Solution

The fourth proportional to 585,021.10, 877,531.65 and 407,728.30 is: 611,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,021.10 : 877,531.65 = 407,728.30 : x
  2. Step 2: Convert to fraction form
    585,021.10/877,531.65 = 407,728.30/x
  3. Step 3: Cross multiply
    585,021.10x = 877,531.65 × 407,728.30
  4. Step 4: Simplify right side
    585,021.10x = 357,794,487,850.70
  5. Step 5: Solve for x
    x = 357,794,487,850.70/585,021.10
  6. Step 6: Final answer
    x = 611,592.45

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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.