Home / 3,121,013.80-4,681,650.30-991,037.80

Finding the Fourth Proportional to 3,121,013.80, 4,681,650.30 and 991,037.80

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Solution

The fourth proportional to 3,121,013.80, 4,681,650.30 and 991,037.80 is: 1,486,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,013.80 : 4,681,650.30 = 991,037.80 : x
  2. Step 2: Convert to fraction form
    3,121,013.80/4,681,650.30 = 991,037.80/x
  3. Step 3: Cross multiply
    3,121,013.80x = 4,681,650.30 × 991,037.80
  4. Step 4: Simplify right side
    3,121,013.80x = 4,639,692,413,681.34
  5. Step 5: Solve for x
    x = 4,639,692,413,681.34/3,121,013.80
  6. Step 6: Final answer
    x = 1,486,597.85

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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.