Home / 815,027.40-1,221,374.70-565,417.80

Finding the Fourth Proportional to 815,027.40, 1,221,374.70 and 565,417.80

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Solution

The fourth proportional to 815,027.40, 1,221,374.70 and 565,417.80 is: 847,317.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,027.40 : 1,221,374.70 = 565,417.80 : x
  2. Step 2: Convert to fraction form
    815,027.40/1,221,374.70 = 565,417.80/x
  3. Step 3: Cross multiply
    815,027.40x = 1,221,374.70 × 565,417.80
  4. Step 4: Simplify right side
    815,027.40x = 690,586,995,849.66
  5. Step 5: Solve for x
    x = 690,586,995,849.66/815,027.40
  6. Step 6: Final answer
    x = 847,317.52

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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.