Home / 810,545.85-1,215,817.14-761,221.49

Finding the Fourth Proportional to 810,545.85, 1,215,817.14 and 761,221.49

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Solution

The fourth proportional to 810,545.85, 1,215,817.14 and 761,221.49 is: 1,141,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,545.85 : 1,215,817.14 = 761,221.49 : x
  2. Step 2: Convert to fraction form
    810,545.85/1,215,817.14 = 761,221.49/x
  3. Step 3: Cross multiply
    810,545.85x = 1,215,817.14 × 761,221.49
  4. Step 4: Simplify right side
    810,545.85x = 925,506,128,799.25
  5. Step 5: Solve for x
    x = 925,506,128,799.25/810,545.85
  6. Step 6: Final answer
    x = 1,141,830.69

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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.