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Finding the Fourth Proportional to 924,156, 1,275,339.12 and 500,220

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Solution

The fourth proportional to 924,156, 1,275,339.12 and 500,220 is: 690,305.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,156 : 1,275,339.12 = 500,220 : x
  2. Step 2: Convert to fraction form
    924,156/1,275,339.12 = 500,220/x
  3. Step 3: Cross multiply
    924,156x = 1,275,339.12 × 500,220
  4. Step 4: Simplify right side
    924,156x = 637,950,134,606.40
  5. Step 5: Solve for x
    x = 637,950,134,606.40/924,156
  6. Step 6: Final answer
    x = 690,305.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.