Home / 814,570.80-1,221,856.20-761,426.70

Finding the Fourth Proportional to 814,570.80, 1,221,856.20 and 761,426.70

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Solution

The fourth proportional to 814,570.80, 1,221,856.20 and 761,426.70 is: 1,142,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,570.80 : 1,221,856.20 = 761,426.70 : x
  2. Step 2: Convert to fraction form
    814,570.80/1,221,856.20 = 761,426.70/x
  3. Step 3: Cross multiply
    814,570.80x = 1,221,856.20 × 761,426.70
  4. Step 4: Simplify right side
    814,570.80x = 930,353,934,240.54
  5. Step 5: Solve for x
    x = 930,353,934,240.54/814,570.80
  6. Step 6: Final answer
    x = 1,142,140.05

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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.