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Finding the Fourth Proportional to 724,596.60, 1,086,894.90 and 656,945.40

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Solution

The fourth proportional to 724,596.60, 1,086,894.90 and 656,945.40 is: 985,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,596.60 : 1,086,894.90 = 656,945.40 : x
  2. Step 2: Convert to fraction form
    724,596.60/1,086,894.90 = 656,945.40/x
  3. Step 3: Cross multiply
    724,596.60x = 1,086,894.90 × 656,945.40
  4. Step 4: Simplify right side
    724,596.60x = 714,030,604,838.46
  5. Step 5: Solve for x
    x = 714,030,604,838.46/724,596.60
  6. Step 6: Final answer
    x = 985,418.10

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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.