Home / 687,176.88-948,302.28-385,377.36

Finding the Fourth Proportional to 687,176.88, 948,302.28 and 385,377.36

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Solution

The fourth proportional to 687,176.88, 948,302.28 and 385,377.36 is: 531,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,176.88 : 948,302.28 = 385,377.36 : x
  2. Step 2: Convert to fraction form
    687,176.88/948,302.28 = 385,377.36/x
  3. Step 3: Cross multiply
    687,176.88x = 948,302.28 × 385,377.36
  4. Step 4: Simplify right side
    687,176.88x = 365,454,229,148.38
  5. Step 5: Solve for x
    x = 365,454,229,148.38/687,176.88
  6. Step 6: Final answer
    x = 531,819.74

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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.