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Finding the Fourth Proportional to 724,378.40, 1,086,713.40 and 606,863.60

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Solution

The fourth proportional to 724,378.40, 1,086,713.40 and 606,863.60 is: 910,417.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,378.40 : 1,086,713.40 = 606,863.60 : x
  2. Step 2: Convert to fraction form
    724,378.40/1,086,713.40 = 606,863.60/x
  3. Step 3: Cross multiply
    724,378.40x = 1,086,713.40 × 606,863.60
  4. Step 4: Simplify right side
    724,378.40x = 659,486,806,092.24
  5. Step 5: Solve for x
    x = 659,486,806,092.24/724,378.40
  6. Step 6: Final answer
    x = 910,417.55

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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.