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Finding the Fourth Proportional to 615,324.80, 922,987.20 and 436,865.60

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Solution

The fourth proportional to 615,324.80, 922,987.20 and 436,865.60 is: 655,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,324.80 : 922,987.20 = 436,865.60 : x
  2. Step 2: Convert to fraction form
    615,324.80/922,987.20 = 436,865.60/x
  3. Step 3: Cross multiply
    615,324.80x = 922,987.20 × 436,865.60
  4. Step 4: Simplify right side
    615,324.80x = 403,221,356,920.32
  5. Step 5: Solve for x
    x = 403,221,356,920.32/615,324.80
  6. Step 6: Final answer
    x = 655,298.40

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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.