Home / 729,418.64-1,006,648.48-407,191.68

Finding the Fourth Proportional to 729,418.64, 1,006,648.48 and 407,191.68

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Solution

The fourth proportional to 729,418.64, 1,006,648.48 and 407,191.68 is: 561,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,418.64 : 1,006,648.48 = 407,191.68 : x
  2. Step 2: Convert to fraction form
    729,418.64/1,006,648.48 = 407,191.68/x
  3. Step 3: Cross multiply
    729,418.64x = 1,006,648.48 × 407,191.68
  4. Step 4: Simplify right side
    729,418.64x = 409,898,885,740.65
  5. Step 5: Solve for x
    x = 409,898,885,740.65/729,418.64
  6. Step 6: Final answer
    x = 561,952.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.