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Finding the Fourth Proportional to 680,737.76, 1,021,737.16 and 344,015.36

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Solution

The fourth proportional to 680,737.76, 1,021,737.16 and 344,015.36 is: 516,341.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,737.76 : 1,021,737.16 = 344,015.36 : x
  2. Step 2: Convert to fraction form
    680,737.76/1,021,737.16 = 344,015.36/x
  3. Step 3: Cross multiply
    680,737.76x = 1,021,737.16 × 344,015.36
  4. Step 4: Simplify right side
    680,737.76x = 351,493,276,922.78
  5. Step 5: Solve for x
    x = 351,493,276,922.78/680,737.76
  6. Step 6: Final answer
    x = 516,341.68

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1.5x scale

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.