Home / 782,359.10-1,078,595.43-668,856.91

Finding the Fourth Proportional to 782,359.10, 1,078,595.43 and 668,856.91

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Solution

The fourth proportional to 782,359.10, 1,078,595.43 and 668,856.91 is: 922,116.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,359.10 : 1,078,595.43 = 668,856.91 : x
  2. Step 2: Convert to fraction form
    782,359.10/1,078,595.43 = 668,856.91/x
  3. Step 3: Cross multiply
    782,359.10x = 1,078,595.43 × 668,856.91
  4. Step 4: Simplify right side
    782,359.10x = 721,426,006,449.92
  5. Step 5: Solve for x
    x = 721,426,006,449.92/782,359.10
  6. Step 6: Final answer
    x = 922,116.21

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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.