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Finding the Fourth Proportional to 577,153.40, 865,730.10 and 478,849.40

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Solution

The fourth proportional to 577,153.40, 865,730.10 and 478,849.40 is: 718,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,153.40 : 865,730.10 = 478,849.40 : x
  2. Step 2: Convert to fraction form
    577,153.40/865,730.10 = 478,849.40/x
  3. Step 3: Cross multiply
    577,153.40x = 865,730.10 × 478,849.40
  4. Step 4: Simplify right side
    577,153.40x = 414,554,338,946.94
  5. Step 5: Solve for x
    x = 414,554,338,946.94/577,153.40
  6. Step 6: Final answer
    x = 718,274.10

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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.