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Finding the Fourth Proportional to 472,568.80, 707,686.80 and 313,938.40

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Solution

The fourth proportional to 472,568.80, 707,686.80 and 313,938.40 is: 470,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,568.80 : 707,686.80 = 313,938.40 : x
  2. Step 2: Convert to fraction form
    472,568.80/707,686.80 = 313,938.40/x
  3. Step 3: Cross multiply
    472,568.80x = 707,686.80 × 313,938.40
  4. Step 4: Simplify right side
    472,568.80x = 222,170,061,693.12
  5. Step 5: Solve for x
    x = 222,170,061,693.12/472,568.80
  6. Step 6: Final answer
    x = 470,132.73

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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.