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Finding the Fourth Proportional to 615,091.20, 922,636.80 and 565,324.80

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Solution

The fourth proportional to 615,091.20, 922,636.80 and 565,324.80 is: 847,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,091.20 : 922,636.80 = 565,324.80 : x
  2. Step 2: Convert to fraction form
    615,091.20/922,636.80 = 565,324.80/x
  3. Step 3: Cross multiply
    615,091.20x = 922,636.80 × 565,324.80
  4. Step 4: Simplify right side
    615,091.20x = 521,589,464,432.64
  5. Step 5: Solve for x
    x = 521,589,464,432.64/615,091.20
  6. Step 6: Final answer
    x = 847,987.20

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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.