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Finding the Fourth Proportional to 585,040.10, 877,560.15 and 319,319.60

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Solution

The fourth proportional to 585,040.10, 877,560.15 and 319,319.60 is: 478,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,040.10 : 877,560.15 = 319,319.60 : x
  2. Step 2: Convert to fraction form
    585,040.10/877,560.15 = 319,319.60/x
  3. Step 3: Cross multiply
    585,040.10x = 877,560.15 × 319,319.60
  4. Step 4: Simplify right side
    585,040.10x = 280,222,156,073.94
  5. Step 5: Solve for x
    x = 280,222,156,073.94/585,040.10
  6. Step 6: Final answer
    x = 478,979.40

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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.