Home / 1,281,103.30-1,767,891.45-708,128.74

Finding the Fourth Proportional to 1,281,103.30, 1,767,891.45 and 708,128.74

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Solution

The fourth proportional to 1,281,103.30, 1,767,891.45 and 708,128.74 is: 977,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,103.30 : 1,767,891.45 = 708,128.74 : x
  2. Step 2: Convert to fraction form
    1,281,103.30/1,767,891.45 = 708,128.74/x
  3. Step 3: Cross multiply
    1,281,103.30x = 1,767,891.45 × 708,128.74
  4. Step 4: Simplify right side
    1,281,103.30x = 1,251,894,744,945.27
  5. Step 5: Solve for x
    x = 1,251,894,744,945.27/1,281,103.30
  6. Step 6: Final answer
    x = 977,200.47

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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.