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Finding the Fourth Proportional to 585,093.40, 877,640.10 and 478,805.20

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Solution

The fourth proportional to 585,093.40, 877,640.10 and 478,805.20 is: 718,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,093.40 : 877,640.10 = 478,805.20 : x
  2. Step 2: Convert to fraction form
    585,093.40/877,640.10 = 478,805.20/x
  3. Step 3: Cross multiply
    585,093.40x = 877,640.10 × 478,805.20
  4. Step 4: Simplify right side
    585,093.40x = 420,218,643,608.52
  5. Step 5: Solve for x
    x = 420,218,643,608.52/585,093.40
  6. Step 6: Final answer
    x = 718,207.80

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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.