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Finding the Fourth Proportional to 660,715.20, 986,079.84 and 596,942.40

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Solution

The fourth proportional to 660,715.20, 986,079.84 and 596,942.40 is: 890,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,715.20 : 986,079.84 = 596,942.40 : x
  2. Step 2: Convert to fraction form
    660,715.20/986,079.84 = 596,942.40/x
  3. Step 3: Cross multiply
    660,715.20x = 986,079.84 × 596,942.40
  4. Step 4: Simplify right side
    660,715.20x = 588,632,866,281.22
  5. Step 5: Solve for x
    x = 588,632,866,281.22/660,715.20
  6. Step 6: Final answer
    x = 890,902.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.