Home / 1,292,643,766.80-1,939,529,076.12-452,888,943.72

Finding the Fourth Proportional to 1,292,643,766.80, 1,939,529,076.12 and 452,888,943.72

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Solution

The fourth proportional to 1,292,643,766.80, 1,939,529,076.12 and 452,888,943.72 is: 679,530,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,643,766.80 : 1,939,529,076.12 = 452,888,943.72 : x
  2. Step 2: Convert to fraction form
    1,292,643,766.80/1,939,529,076.12 = 452,888,943.72/x
  3. Step 3: Cross multiply
    1,292,643,766.80x = 1,939,529,076.12 × 452,888,943.72
  4. Step 4: Simplify right side
    1,292,643,766.80x = 878,391,274,598,214,272
  5. Step 5: Solve for x
    x = 878,391,274,598,214,272/1,292,643,766.80
  6. Step 6: Final answer
    x = 679,530,816.73

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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.