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Finding the Fourth Proportional to 819,419,875.60, 1,229,129,813.40 and 819,419,875.60

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Solution

The fourth proportional to 819,419,875.60, 1,229,129,813.40 and 819,419,875.60 is: 1,229,129,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,419,875.60 : 1,229,129,813.40 = 819,419,875.60 : x
  2. Step 2: Convert to fraction form
    819,419,875.60/1,229,129,813.40 = 819,419,875.60/x
  3. Step 3: Cross multiply
    819,419,875.60x = 1,229,129,813.40 × 819,419,875.60
  4. Step 4: Simplify right side
    819,419,875.60x = 1,007,173,398,792,479,360
  5. Step 5: Solve for x
    x = 1,007,173,398,792,479,360/819,419,875.60
  6. Step 6: Final answer
    x = 1,229,129,813.40

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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.