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Finding the Fourth Proportional to 615,086.40, 922,629.60 and 517,108.80

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Solution

The fourth proportional to 615,086.40, 922,629.60 and 517,108.80 is: 775,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,086.40 : 922,629.60 = 517,108.80 : x
  2. Step 2: Convert to fraction form
    615,086.40/922,629.60 = 517,108.80/x
  3. Step 3: Cross multiply
    615,086.40x = 922,629.60 × 517,108.80
  4. Step 4: Simplify right side
    615,086.40x = 477,099,885,300.48
  5. Step 5: Solve for x
    x = 477,099,885,300.48/615,086.40
  6. Step 6: Final answer
    x = 775,663.20

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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.