Home / 987,780.80-1,481,671.20-972,034.40

Finding the Fourth Proportional to 987,780.80, 1,481,671.20 and 972,034.40

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Solution

The fourth proportional to 987,780.80, 1,481,671.20 and 972,034.40 is: 1,458,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,780.80 : 1,481,671.20 = 972,034.40 : x
  2. Step 2: Convert to fraction form
    987,780.80/1,481,671.20 = 972,034.40/x
  3. Step 3: Cross multiply
    987,780.80x = 1,481,671.20 × 972,034.40
  4. Step 4: Simplify right side
    987,780.80x = 1,440,235,375,889.28
  5. Step 5: Solve for x
    x = 1,440,235,375,889.28/987,780.80
  6. Step 6: Final answer
    x = 1,458,051.60

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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.