Home / 725,417.38-1,000,020.89-506,947.78

Finding the Fourth Proportional to 725,417.38, 1,000,020.89 and 506,947.78

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Solution

The fourth proportional to 725,417.38, 1,000,020.89 and 506,947.78 is: 698,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,417.38 : 1,000,020.89 = 506,947.78 : x
  2. Step 2: Convert to fraction form
    725,417.38/1,000,020.89 = 506,947.78/x
  3. Step 3: Cross multiply
    725,417.38x = 1,000,020.89 × 506,947.78
  4. Step 4: Simplify right side
    725,417.38x = 506,958,370,139.12
  5. Step 5: Solve for x
    x = 506,958,370,139.12/725,417.38
  6. Step 6: Final answer
    x = 698,850.60

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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.