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Finding the Fourth Proportional to 585,035.40, 877,553.10 and 478,747.20

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Solution

The fourth proportional to 585,035.40, 877,553.10 and 478,747.20 is: 718,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,035.40 : 877,553.10 = 478,747.20 : x
  2. Step 2: Convert to fraction form
    585,035.40/877,553.10 = 478,747.20/x
  3. Step 3: Cross multiply
    585,035.40x = 877,553.10 × 478,747.20
  4. Step 4: Simplify right side
    585,035.40x = 420,126,089,476.32
  5. Step 5: Solve for x
    x = 420,126,089,476.32/585,035.40
  6. Step 6: Final answer
    x = 718,120.80

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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.