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Finding the Fourth Proportional to 486,666.53, 730,155.75 and 340,758.42

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Solution

The fourth proportional to 486,666.53, 730,155.75 and 340,758.42 is: 511,246.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,666.53 : 730,155.75 = 340,758.42 : x
  2. Step 2: Convert to fraction form
    486,666.53/730,155.75 = 340,758.42/x
  3. Step 3: Cross multiply
    486,666.53x = 730,155.75 × 340,758.42
  4. Step 4: Simplify right side
    486,666.53x = 248,806,724,743.83
  5. Step 5: Solve for x
    x = 248,806,724,743.83/486,666.53
  6. Step 6: Final answer
    x = 511,246.83

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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.