Home / 891,807.72-1,338,148.98-418,531.56

Finding the Fourth Proportional to 891,807.72, 1,338,148.98 and 418,531.56

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Solution

The fourth proportional to 891,807.72, 1,338,148.98 and 418,531.56 is: 628,002.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,807.72 : 1,338,148.98 = 418,531.56 : x
  2. Step 2: Convert to fraction form
    891,807.72/1,338,148.98 = 418,531.56/x
  3. Step 3: Cross multiply
    891,807.72x = 1,338,148.98 × 418,531.56
  4. Step 4: Simplify right side
    891,807.72x = 560,057,580,111.81
  5. Step 5: Solve for x
    x = 560,057,580,111.81/891,807.72
  6. Step 6: Final answer
    x = 628,002.61

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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.