Home / 1,992,906,007.20-2,989,359,010.80-1,339,871,306.40

Finding the Fourth Proportional to 1,992,906,007.20, 2,989,359,010.80 and 1,339,871,306.40

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Solution

The fourth proportional to 1,992,906,007.20, 2,989,359,010.80 and 1,339,871,306.40 is: 2,009,806,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,906,007.20 : 2,989,359,010.80 = 1,339,871,306.40 : x
  2. Step 2: Convert to fraction form
    1,992,906,007.20/2,989,359,010.80 = 1,339,871,306.40/x
  3. Step 3: Cross multiply
    1,992,906,007.20x = 2,989,359,010.80 × 1,339,871,306.40
  4. Step 4: Simplify right side
    1,992,906,007.20x = 4,005,356,363,099,208,192
  5. Step 5: Solve for x
    x = 4,005,356,363,099,208,192/1,992,906,007.20
  6. Step 6: Final answer
    x = 2,009,806,959.60

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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.