Home / 690,923.31-1,036,422.08-217,645.71

Finding the Fourth Proportional to 690,923.31, 1,036,422.08 and 217,645.71

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Solution

The fourth proportional to 690,923.31, 1,036,422.08 and 217,645.71 is: 326,480.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,923.31 : 1,036,422.08 = 217,645.71 : x
  2. Step 2: Convert to fraction form
    690,923.31/1,036,422.08 = 217,645.71/x
  3. Step 3: Cross multiply
    690,923.31x = 1,036,422.08 × 217,645.71
  4. Step 4: Simplify right side
    690,923.31x = 225,572,819,461.28
  5. Step 5: Solve for x
    x = 225,572,819,461.28/690,923.31
  6. Step 6: Final answer
    x = 326,480.26

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Double scale
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1.5x scale

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.