Home / 687,745.20-1,031,617.80-477,793.20

Finding the Fourth Proportional to 687,745.20, 1,031,617.80 and 477,793.20

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Solution

The fourth proportional to 687,745.20, 1,031,617.80 and 477,793.20 is: 716,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745.20 : 1,031,617.80 = 477,793.20 : x
  2. Step 2: Convert to fraction form
    687,745.20/1,031,617.80 = 477,793.20/x
  3. Step 3: Cross multiply
    687,745.20x = 1,031,617.80 × 477,793.20
  4. Step 4: Simplify right side
    687,745.20x = 492,899,969,838.96
  5. Step 5: Solve for x
    x = 492,899,969,838.96/687,745.20
  6. Step 6: Final answer
    x = 716,689.80

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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.