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Finding the Fourth Proportional to 620,591,713.80, 930,887,570.70 and 275,178,683.40

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Solution

The fourth proportional to 620,591,713.80, 930,887,570.70 and 275,178,683.40 is: 412,768,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,591,713.80 : 930,887,570.70 = 275,178,683.40 : x
  2. Step 2: Convert to fraction form
    620,591,713.80/930,887,570.70 = 275,178,683.40/x
  3. Step 3: Cross multiply
    620,591,713.80x = 930,887,570.70 × 275,178,683.40
  4. Step 4: Simplify right side
    620,591,713.80x = 256,160,416,098,650,400
  5. Step 5: Solve for x
    x = 256,160,416,098,650,400/620,591,713.80
  6. Step 6: Final answer
    x = 412,768,025.10

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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.