Home / 725,324.34-1,000,970.13-398,631.42

Finding the Fourth Proportional to 725,324.34, 1,000,970.13 and 398,631.42

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Solution

The fourth proportional to 725,324.34, 1,000,970.13 and 398,631.42 is: 550,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,324.34 : 1,000,970.13 = 398,631.42 : x
  2. Step 2: Convert to fraction form
    725,324.34/1,000,970.13 = 398,631.42/x
  3. Step 3: Cross multiply
    725,324.34x = 1,000,970.13 × 398,631.42
  4. Step 4: Simplify right side
    725,324.34x = 399,018,144,299.49
  5. Step 5: Solve for x
    x = 399,018,144,299.49/725,324.34
  6. Step 6: Final answer
    x = 550,123.75

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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.