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Finding the Fourth Proportional to 647,885.30, 971,390.55 and 344,329.70

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Solution

The fourth proportional to 647,885.30, 971,390.55 and 344,329.70 is: 516,262.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,885.30 : 971,390.55 = 344,329.70 : x
  2. Step 2: Convert to fraction form
    647,885.30/971,390.55 = 344,329.70/x
  3. Step 3: Cross multiply
    647,885.30x = 971,390.55 × 344,329.70
  4. Step 4: Simplify right side
    647,885.30x = 334,478,616,664.34
  5. Step 5: Solve for x
    x = 334,478,616,664.34/647,885.30
  6. Step 6: Final answer
    x = 516,262.09

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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.