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Finding the Fourth Proportional to 428,565.53, 642,955.33 and 302,452.10

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Solution

The fourth proportional to 428,565.53, 642,955.33 and 302,452.10 is: 453,753.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,565.53 : 642,955.33 = 302,452.10 : x
  2. Step 2: Convert to fraction form
    428,565.53/642,955.33 = 302,452.10/x
  3. Step 3: Cross multiply
    428,565.53x = 642,955.33 × 302,452.10
  4. Step 4: Simplify right side
    428,565.53x = 194,463,185,793.79
  5. Step 5: Solve for x
    x = 194,463,185,793.79/428,565.53
  6. Step 6: Final answer
    x = 453,753.68

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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.