Home / 1,288,210.80-1,932,316.20-747,912.45

Finding the Fourth Proportional to 1,288,210.80, 1,932,316.20 and 747,912.45

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Solution

The fourth proportional to 1,288,210.80, 1,932,316.20 and 747,912.45 is: 1,121,868.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,210.80 : 1,932,316.20 = 747,912.45 : x
  2. Step 2: Convert to fraction form
    1,288,210.80/1,932,316.20 = 747,912.45/x
  3. Step 3: Cross multiply
    1,288,210.80x = 1,932,316.20 × 747,912.45
  4. Step 4: Simplify right side
    1,288,210.80x = 1,445,203,343,316.69
  5. Step 5: Solve for x
    x = 1,445,203,343,316.69/1,288,210.80
  6. Step 6: Final answer
    x = 1,121,868.68

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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.