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Finding the Fourth Proportional to 648,223.20, 972,334.80 and 608,824.80

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Solution

The fourth proportional to 648,223.20, 972,334.80 and 608,824.80 is: 913,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,223.20 : 972,334.80 = 608,824.80 : x
  2. Step 2: Convert to fraction form
    648,223.20/972,334.80 = 608,824.80/x
  3. Step 3: Cross multiply
    648,223.20x = 972,334.80 × 608,824.80
  4. Step 4: Simplify right side
    648,223.20x = 591,981,540,143.04
  5. Step 5: Solve for x
    x = 591,981,540,143.04/648,223.20
  6. Step 6: Final answer
    x = 913,237.20

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Similar ratio
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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.