Home / 456,320.12-680,370.21-418,381.36

Finding the Fourth Proportional to 456,320.12, 680,370.21 and 418,381.36

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Solution

The fourth proportional to 456,320.12, 680,370.21 and 418,381.36 is: 623,803.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,320.12 : 680,370.21 = 418,381.36 : x
  2. Step 2: Convert to fraction form
    456,320.12/680,370.21 = 418,381.36/x
  3. Step 3: Cross multiply
    456,320.12x = 680,370.21 × 418,381.36
  4. Step 4: Simplify right side
    456,320.12x = 284,654,213,763.29
  5. Step 5: Solve for x
    x = 284,654,213,763.29/456,320.12
  6. Step 6: Final answer
    x = 623,803.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.