Home / 992,721.20-1,489,081.80-393,825.20

Finding the Fourth Proportional to 992,721.20, 1,489,081.80 and 393,825.20

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Solution

The fourth proportional to 992,721.20, 1,489,081.80 and 393,825.20 is: 590,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,721.20 : 1,489,081.80 = 393,825.20 : x
  2. Step 2: Convert to fraction form
    992,721.20/1,489,081.80 = 393,825.20/x
  3. Step 3: Cross multiply
    992,721.20x = 1,489,081.80 × 393,825.20
  4. Step 4: Simplify right side
    992,721.20x = 586,437,937,701.36
  5. Step 5: Solve for x
    x = 586,437,937,701.36/992,721.20
  6. Step 6: Final answer
    x = 590,737.80

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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.