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Finding the Fourth Proportional to 652,404.10, 978,606.15 and 439,827.70

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Solution

The fourth proportional to 652,404.10, 978,606.15 and 439,827.70 is: 659,741.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,404.10 : 978,606.15 = 439,827.70 : x
  2. Step 2: Convert to fraction form
    652,404.10/978,606.15 = 439,827.70/x
  3. Step 3: Cross multiply
    652,404.10x = 978,606.15 × 439,827.70
  4. Step 4: Simplify right side
    652,404.10x = 430,418,092,160.36
  5. Step 5: Solve for x
    x = 430,418,092,160.36/652,404.10
  6. Step 6: Final answer
    x = 659,741.55

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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.