Home / 672,123.26-927,522.78-385,688.18

Finding the Fourth Proportional to 672,123.26, 927,522.78 and 385,688.18

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Solution

The fourth proportional to 672,123.26, 927,522.78 and 385,688.18 is: 532,245.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,123.26 : 927,522.78 = 385,688.18 : x
  2. Step 2: Convert to fraction form
    672,123.26/927,522.78 = 385,688.18/x
  3. Step 3: Cross multiply
    672,123.26x = 927,522.78 × 385,688.18
  4. Step 4: Simplify right side
    672,123.26x = 357,734,572,926.74
  5. Step 5: Solve for x
    x = 357,734,572,926.74/672,123.26
  6. Step 6: Final answer
    x = 532,245.49

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Double scale
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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.