Home / 660,394.40-911,003.28-418,269.60

Finding the Fourth Proportional to 660,394.40, 911,003.28 and 418,269.60

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Solution

The fourth proportional to 660,394.40, 911,003.28 and 418,269.60 is: 576,996.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,394.40 : 911,003.28 = 418,269.60 : x
  2. Step 2: Convert to fraction form
    660,394.40/911,003.28 = 418,269.60/x
  3. Step 3: Cross multiply
    660,394.40x = 911,003.28 × 418,269.60
  4. Step 4: Simplify right side
    660,394.40x = 381,044,977,524.29
  5. Step 5: Solve for x
    x = 381,044,977,524.29/660,394.40
  6. Step 6: Final answer
    x = 576,996.08

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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.