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Finding the Fourth Proportional to 659,337.66, 989,184.06 and 339,315.18

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Solution

The fourth proportional to 659,337.66, 989,184.06 and 339,315.18 is: 509,064.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,337.66 : 989,184.06 = 339,315.18 : x
  2. Step 2: Convert to fraction form
    659,337.66/989,184.06 = 339,315.18/x
  3. Step 3: Cross multiply
    659,337.66x = 989,184.06 × 339,315.18
  4. Step 4: Simplify right side
    659,337.66x = 335,645,167,372.03
  5. Step 5: Solve for x
    x = 335,645,167,372.03/659,337.66
  6. Step 6: Final answer
    x = 509,064.15

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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.