Home / 724,456.40-999,823.56-422,632.40

Finding the Fourth Proportional to 724,456.40, 999,823.56 and 422,632.40

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Solution

The fourth proportional to 724,456.40, 999,823.56 and 422,632.40 is: 583,275.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,456.40 : 999,823.56 = 422,632.40 : x
  2. Step 2: Convert to fraction form
    724,456.40/999,823.56 = 422,632.40/x
  3. Step 3: Cross multiply
    724,456.40x = 999,823.56 × 422,632.40
  4. Step 4: Simplify right side
    724,456.40x = 422,557,830,739.34
  5. Step 5: Solve for x
    x = 422,557,830,739.34/724,456.40
  6. Step 6: Final answer
    x = 583,275.72

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Similar ratio
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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.