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Finding the Fourth Proportional to 659,321.20, 988,981.80 and 598,303.90

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Solution

The fourth proportional to 659,321.20, 988,981.80 and 598,303.90 is: 897,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,321.20 : 988,981.80 = 598,303.90 : x
  2. Step 2: Convert to fraction form
    659,321.20/988,981.80 = 598,303.90/x
  3. Step 3: Cross multiply
    659,321.20x = 988,981.80 × 598,303.90
  4. Step 4: Simplify right side
    659,321.20x = 591,711,667,969.02
  5. Step 5: Solve for x
    x = 591,711,667,969.02/659,321.20
  6. Step 6: Final answer
    x = 897,455.85

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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.