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Finding the Fourth Proportional to 659,970.39, 988,155.29 and 499,560.09

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Solution

The fourth proportional to 659,970.39, 988,155.29 and 499,560.09 is: 747,977.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,970.39 : 988,155.29 = 499,560.09 : x
  2. Step 2: Convert to fraction form
    659,970.39/988,155.29 = 499,560.09/x
  3. Step 3: Cross multiply
    659,970.39x = 988,155.29 × 499,560.09
  4. Step 4: Simplify right side
    659,970.39x = 493,642,946,237.72
  5. Step 5: Solve for x
    x = 493,642,946,237.72/659,970.39
  6. Step 6: Final answer
    x = 747,977.41

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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.