Home / 747,868.56-1,120,129.80-347,910

Finding the Fourth Proportional to 747,868.56, 1,120,129.80 and 347,910

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Solution

The fourth proportional to 747,868.56, 1,120,129.80 and 347,910 is: 521,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,868.56 : 1,120,129.80 = 347,910 : x
  2. Step 2: Convert to fraction form
    747,868.56/1,120,129.80 = 347,910/x
  3. Step 3: Cross multiply
    747,868.56x = 1,120,129.80 × 347,910
  4. Step 4: Simplify right side
    747,868.56x = 389,704,358,718
  5. Step 5: Solve for x
    x = 389,704,358,718/747,868.56
  6. Step 6: Final answer
    x = 521,086.70

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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.