Home / 1,187,999.20-1,780,443.60-477,445.60

Finding the Fourth Proportional to 1,187,999.20, 1,780,443.60 and 477,445.60

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Solution

The fourth proportional to 1,187,999.20, 1,780,443.60 and 477,445.60 is: 715,543.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,999.20 : 1,780,443.60 = 477,445.60 : x
  2. Step 2: Convert to fraction form
    1,187,999.20/1,780,443.60 = 477,445.60/x
  3. Step 3: Cross multiply
    1,187,999.20x = 1,780,443.60 × 477,445.60
  4. Step 4: Simplify right side
    1,187,999.20x = 850,064,962,868.16
  5. Step 5: Solve for x
    x = 850,064,962,868.16/1,187,999.20
  6. Step 6: Final answer
    x = 715,543.38

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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.