Home / 928,825.72-1,281,655.51-515,355.90

Finding the Fourth Proportional to 928,825.72, 1,281,655.51 and 515,355.90

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Solution

The fourth proportional to 928,825.72, 1,281,655.51 and 515,355.90 is: 711,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,825.72 : 1,281,655.51 = 515,355.90 : x
  2. Step 2: Convert to fraction form
    928,825.72/1,281,655.51 = 515,355.90/x
  3. Step 3: Cross multiply
    928,825.72x = 1,281,655.51 × 515,355.90
  4. Step 4: Simplify right side
    928,825.72x = 660,508,728,846.01
  5. Step 5: Solve for x
    x = 660,508,728,846.01/928,825.72
  6. Step 6: Final answer
    x = 711,122.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.