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Finding the Fourth Proportional to 577,139.80, 865,709.70 and 535,149.40

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Solution

The fourth proportional to 577,139.80, 865,709.70 and 535,149.40 is: 802,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,139.80 : 865,709.70 = 535,149.40 : x
  2. Step 2: Convert to fraction form
    577,139.80/865,709.70 = 535,149.40/x
  3. Step 3: Cross multiply
    577,139.80x = 865,709.70 × 535,149.40
  4. Step 4: Simplify right side
    577,139.80x = 463,284,026,529.18
  5. Step 5: Solve for x
    x = 463,284,026,529.18/577,139.80
  6. Step 6: Final answer
    x = 802,724.10

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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.