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Finding the Fourth Proportional to 577,129.80, 865,694.70 and 535,139.40

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Solution

The fourth proportional to 577,129.80, 865,694.70 and 535,139.40 is: 802,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,129.80 : 865,694.70 = 535,139.40 : x
  2. Step 2: Convert to fraction form
    577,129.80/865,694.70 = 535,139.40/x
  3. Step 3: Cross multiply
    577,129.80x = 865,694.70 × 535,139.40
  4. Step 4: Simplify right side
    577,129.80x = 463,267,342,341.18
  5. Step 5: Solve for x
    x = 463,267,342,341.18/577,129.80
  6. Step 6: Final answer
    x = 802,709.10

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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.