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Finding the Fourth Proportional to 819,801,205.20, 1,229,701,807.80 and 740,722,784.40

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Solution

The fourth proportional to 819,801,205.20, 1,229,701,807.80 and 740,722,784.40 is: 1,111,084,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,801,205.20 : 1,229,701,807.80 = 740,722,784.40 : x
  2. Step 2: Convert to fraction form
    819,801,205.20/1,229,701,807.80 = 740,722,784.40/x
  3. Step 3: Cross multiply
    819,801,205.20x = 1,229,701,807.80 × 740,722,784.40
  4. Step 4: Simplify right side
    819,801,205.20x = 910,868,147,055,329,536
  5. Step 5: Solve for x
    x = 910,868,147,055,329,536/819,801,205.20
  6. Step 6: Final answer
    x = 1,111,084,176.60

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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.