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Finding the Fourth Proportional to 398,641,256.80, 597,961,885.20 and 398,641,256.80

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Solution

The fourth proportional to 398,641,256.80, 597,961,885.20 and 398,641,256.80 is: 597,961,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,641,256.80 : 597,961,885.20 = 398,641,256.80 : x
  2. Step 2: Convert to fraction form
    398,641,256.80/597,961,885.20 = 398,641,256.80/x
  3. Step 3: Cross multiply
    398,641,256.80x = 597,961,885.20 × 398,641,256.80
  4. Step 4: Simplify right side
    398,641,256.80x = 238,372,277,434,625,344
  5. Step 5: Solve for x
    x = 238,372,277,434,625,344/398,641,256.80
  6. Step 6: Final answer
    x = 597,961,885.20

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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.