Home / 674,248.20-1,011,809.70-389,938.20

Finding the Fourth Proportional to 674,248.20, 1,011,809.70 and 389,938.20

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Solution

The fourth proportional to 674,248.20, 1,011,809.70 and 389,938.20 is: 585,160.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,248.20 : 1,011,809.70 = 389,938.20 : x
  2. Step 2: Convert to fraction form
    674,248.20/1,011,809.70 = 389,938.20/x
  3. Step 3: Cross multiply
    674,248.20x = 1,011,809.70 × 389,938.20
  4. Step 4: Simplify right side
    674,248.20x = 394,543,253,160.54
  5. Step 5: Solve for x
    x = 394,543,253,160.54/674,248.20
  6. Step 6: Final answer
    x = 585,160.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.