Home / 989,721.20-1,485,152.04-591,330.80

Finding the Fourth Proportional to 989,721.20, 1,485,152.04 and 591,330.80

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Solution

The fourth proportional to 989,721.20, 1,485,152.04 and 591,330.80 is: 887,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,721.20 : 1,485,152.04 = 591,330.80 : x
  2. Step 2: Convert to fraction form
    989,721.20/1,485,152.04 = 591,330.80/x
  3. Step 3: Cross multiply
    989,721.20x = 1,485,152.04 × 591,330.80
  4. Step 4: Simplify right side
    989,721.20x = 878,216,143,934.83
  5. Step 5: Solve for x
    x = 878,216,143,934.83/989,721.20
  6. Step 6: Final answer
    x = 887,336.90

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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.