Home / 502,220.89-693,069.92-272,780.40

Finding the Fourth Proportional to 502,220.89, 693,069.92 and 272,780.40

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Solution

The fourth proportional to 502,220.89, 693,069.92 and 272,780.40 is: 376,439.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,220.89 : 693,069.92 = 272,780.40 : x
  2. Step 2: Convert to fraction form
    502,220.89/693,069.92 = 272,780.40/x
  3. Step 3: Cross multiply
    502,220.89x = 693,069.92 × 272,780.40
  4. Step 4: Simplify right side
    502,220.89x = 189,055,890,005.57
  5. Step 5: Solve for x
    x = 189,055,890,005.57/502,220.89
  6. Step 6: Final answer
    x = 376,439.72

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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.