Home / 1,007,374.40-1,511,061.60-688,509.80

Finding the Fourth Proportional to 1,007,374.40, 1,511,061.60 and 688,509.80

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Solution

The fourth proportional to 1,007,374.40, 1,511,061.60 and 688,509.80 is: 1,032,764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,374.40 : 1,511,061.60 = 688,509.80 : x
  2. Step 2: Convert to fraction form
    1,007,374.40/1,511,061.60 = 688,509.80/x
  3. Step 3: Cross multiply
    1,007,374.40x = 1,511,061.60 × 688,509.80
  4. Step 4: Simplify right side
    1,007,374.40x = 1,040,380,720,003.68
  5. Step 5: Solve for x
    x = 1,040,380,720,003.68/1,007,374.40
  6. Step 6: Final answer
    x = 1,032,764.70

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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.