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Finding the Fourth Proportional to 615,324.30, 922,986.45 and 436,865.10

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Solution

The fourth proportional to 615,324.30, 922,986.45 and 436,865.10 is: 655,297.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,324.30 : 922,986.45 = 436,865.10 : x
  2. Step 2: Convert to fraction form
    615,324.30/922,986.45 = 436,865.10/x
  3. Step 3: Cross multiply
    615,324.30x = 922,986.45 × 436,865.10
  4. Step 4: Simplify right side
    615,324.30x = 403,220,567,777.90
  5. Step 5: Solve for x
    x = 403,220,567,777.90/615,324.30
  6. Step 6: Final answer
    x = 655,297.65

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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.