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Finding the Fourth Proportional to 659,901.58, 989,774.61 and 519,700.30

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Solution

The fourth proportional to 659,901.58, 989,774.61 and 519,700.30 is: 779,489.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,901.58 : 989,774.61 = 519,700.30 : x
  2. Step 2: Convert to fraction form
    659,901.58/989,774.61 = 519,700.30/x
  3. Step 3: Cross multiply
    659,901.58x = 989,774.61 × 519,700.30
  4. Step 4: Simplify right side
    659,901.58x = 514,386,161,749.38
  5. Step 5: Solve for x
    x = 514,386,161,749.38/659,901.58
  6. Step 6: Final answer
    x = 779,489.21

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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.