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Finding the Fourth Proportional to 656,430.20, 984,645.30 and 561,951.80

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Solution

The fourth proportional to 656,430.20, 984,645.30 and 561,951.80 is: 842,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,430.20 : 984,645.30 = 561,951.80 : x
  2. Step 2: Convert to fraction form
    656,430.20/984,645.30 = 561,951.80/x
  3. Step 3: Cross multiply
    656,430.20x = 984,645.30 × 561,951.80
  4. Step 4: Simplify right side
    656,430.20x = 553,323,198,696.54
  5. Step 5: Solve for x
    x = 553,323,198,696.54/656,430.20
  6. Step 6: Final answer
    x = 842,927.70

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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.