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Finding the Fourth Proportional to 659,899.08, 989,770.86 and 519,697.80

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Solution

The fourth proportional to 659,899.08, 989,770.86 and 519,697.80 is: 779,485.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,899.08 : 989,770.86 = 519,697.80 : x
  2. Step 2: Convert to fraction form
    659,899.08/989,770.86 = 519,697.80/x
  3. Step 3: Cross multiply
    659,899.08x = 989,770.86 × 519,697.80
  4. Step 4: Simplify right side
    659,899.08x = 514,381,738,446.11
  5. Step 5: Solve for x
    x = 514,381,738,446.11/659,899.08
  6. Step 6: Final answer
    x = 779,485.46

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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.