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Finding the Fourth Proportional to 539,095.90, 808,643.85 and 478,443.10

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Solution

The fourth proportional to 539,095.90, 808,643.85 and 478,443.10 is: 717,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,095.90 : 808,643.85 = 478,443.10 : x
  2. Step 2: Convert to fraction form
    539,095.90/808,643.85 = 478,443.10/x
  3. Step 3: Cross multiply
    539,095.90x = 808,643.85 × 478,443.10
  4. Step 4: Simplify right side
    539,095.90x = 386,890,070,389.94
  5. Step 5: Solve for x
    x = 386,890,070,389.94/539,095.90
  6. Step 6: Final answer
    x = 717,664.65

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Double scale
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Similar ratio
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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.