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Finding the Fourth Proportional to 398,640,824.80, 596,827,496.40 and 398,640,824.80

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Solution

The fourth proportional to 398,640,824.80, 596,827,496.40 and 398,640,824.80 is: 596,827,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,640,824.80 : 596,827,496.40 = 398,640,824.80 : x
  2. Step 2: Convert to fraction form
    398,640,824.80/596,827,496.40 = 398,640,824.80/x
  3. Step 3: Cross multiply
    398,640,824.80x = 596,827,496.40 × 398,640,824.80
  4. Step 4: Simplify right side
    398,640,824.80x = 237,919,805,428,215,040
  5. Step 5: Solve for x
    x = 237,919,805,428,215,040/398,640,824.80
  6. Step 6: Final answer
    x = 596,827,496.40

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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.