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Finding the Fourth Proportional to 584,714.80, 877,072.20 and 478,426.60

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Solution

The fourth proportional to 584,714.80, 877,072.20 and 478,426.60 is: 717,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,714.80 : 877,072.20 = 478,426.60 : x
  2. Step 2: Convert to fraction form
    584,714.80/877,072.20 = 478,426.60/x
  3. Step 3: Cross multiply
    584,714.80x = 877,072.20 × 478,426.60
  4. Step 4: Simplify right side
    584,714.80x = 419,614,670,600.52
  5. Step 5: Solve for x
    x = 419,614,670,600.52/584,714.80
  6. Step 6: Final answer
    x = 717,639.90

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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.