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Finding the Fourth Proportional to 608,918.40, 912,380.40 and 324,306.90

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Solution

The fourth proportional to 608,918.40, 912,380.40 and 324,306.90 is: 485,929.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,918.40 : 912,380.40 = 324,306.90 : x
  2. Step 2: Convert to fraction form
    608,918.40/912,380.40 = 324,306.90/x
  3. Step 3: Cross multiply
    608,918.40x = 912,380.40 × 324,306.90
  4. Step 4: Simplify right side
    608,918.40x = 295,891,259,144.76
  5. Step 5: Solve for x
    x = 295,891,259,144.76/608,918.40
  6. Step 6: Final answer
    x = 485,929.25

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1.5x scale

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.