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Finding the Fourth Proportional to 661,737.60, 992,606.40 and 395,798.40

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Solution

The fourth proportional to 661,737.60, 992,606.40 and 395,798.40 is: 593,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,737.60 : 992,606.40 = 395,798.40 : x
  2. Step 2: Convert to fraction form
    661,737.60/992,606.40 = 395,798.40/x
  3. Step 3: Cross multiply
    661,737.60x = 992,606.40 × 395,798.40
  4. Step 4: Simplify right side
    661,737.60x = 392,872,024,949.76
  5. Step 5: Solve for x
    x = 392,872,024,949.76/661,737.60
  6. Step 6: Final answer
    x = 593,697.60

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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.