Home / 782,528.80-1,079,832.72-442,976.80

Finding the Fourth Proportional to 782,528.80, 1,079,832.72 and 442,976.80

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Solution

The fourth proportional to 782,528.80, 1,079,832.72 and 442,976.80 is: 611,275.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,528.80 : 1,079,832.72 = 442,976.80 : x
  2. Step 2: Convert to fraction form
    782,528.80/1,079,832.72 = 442,976.80/x
  3. Step 3: Cross multiply
    782,528.80x = 1,079,832.72 × 442,976.80
  4. Step 4: Simplify right side
    782,528.80x = 478,340,842,840.90
  5. Step 5: Solve for x
    x = 478,340,842,840.90/782,528.80
  6. Step 6: Final answer
    x = 611,275.70

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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.