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Finding the Fourth Proportional to 680,872.16, 939,545.52 and 379,094.24

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Solution

The fourth proportional to 680,872.16, 939,545.52 and 379,094.24 is: 523,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,872.16 : 939,545.52 = 379,094.24 : x
  2. Step 2: Convert to fraction form
    680,872.16/939,545.52 = 379,094.24/x
  3. Step 3: Cross multiply
    680,872.16x = 939,545.52 × 379,094.24
  4. Step 4: Simplify right side
    680,872.16x = 356,176,294,849.81
  5. Step 5: Solve for x
    x = 356,176,294,849.81/680,872.16
  6. Step 6: Final answer
    x = 523,117.72

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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.