Home / 992,947.20-1,489,809.60-393,806.40

Finding the Fourth Proportional to 992,947.20, 1,489,809.60 and 393,806.40

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Solution

The fourth proportional to 992,947.20, 1,489,809.60 and 393,806.40 is: 590,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,947.20 : 1,489,809.60 = 393,806.40 : x
  2. Step 2: Convert to fraction form
    992,947.20/1,489,809.60 = 393,806.40/x
  3. Step 3: Cross multiply
    992,947.20x = 1,489,809.60 × 393,806.40
  4. Step 4: Simplify right side
    992,947.20x = 586,696,555,261.44
  5. Step 5: Solve for x
    x = 586,696,555,261.44/992,947.20
  6. Step 6: Final answer
    x = 590,863.80

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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.