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Finding the Fourth Proportional to 577,106.30, 865,659.45 and 437,138.30

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Solution

The fourth proportional to 577,106.30, 865,659.45 and 437,138.30 is: 655,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,106.30 : 865,659.45 = 437,138.30 : x
  2. Step 2: Convert to fraction form
    577,106.30/865,659.45 = 437,138.30/x
  3. Step 3: Cross multiply
    577,106.30x = 865,659.45 × 437,138.30
  4. Step 4: Simplify right side
    577,106.30x = 378,412,900,351.94
  5. Step 5: Solve for x
    x = 378,412,900,351.94/577,106.30
  6. Step 6: Final answer
    x = 655,707.45

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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.