Home / 810,005.70-1,215,008.55-432,092.10

Finding the Fourth Proportional to 810,005.70, 1,215,008.55 and 432,092.10

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Solution

The fourth proportional to 810,005.70, 1,215,008.55 and 432,092.10 is: 648,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,005.70 : 1,215,008.55 = 432,092.10 : x
  2. Step 2: Convert to fraction form
    810,005.70/1,215,008.55 = 432,092.10/x
  3. Step 3: Cross multiply
    810,005.70x = 1,215,008.55 × 432,092.10
  4. Step 4: Simplify right side
    810,005.70x = 524,995,595,887.46
  5. Step 5: Solve for x
    x = 524,995,595,887.46/810,005.70
  6. Step 6: Final answer
    x = 648,138.15

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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.