Home / 814,572.30-1,221,858.45-761,428.20

Finding the Fourth Proportional to 814,572.30, 1,221,858.45 and 761,428.20

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Solution

The fourth proportional to 814,572.30, 1,221,858.45 and 761,428.20 is: 1,142,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,572.30 : 1,221,858.45 = 761,428.20 : x
  2. Step 2: Convert to fraction form
    814,572.30/1,221,858.45 = 761,428.20/x
  3. Step 3: Cross multiply
    814,572.30x = 1,221,858.45 × 761,428.20
  4. Step 4: Simplify right side
    814,572.30x = 930,357,480,238.29
  5. Step 5: Solve for x
    x = 930,357,480,238.29/814,572.30
  6. Step 6: Final answer
    x = 1,142,142.30

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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.