Home / 472,408,643.80-708,612,965.70-127,397,146.60

Finding the Fourth Proportional to 472,408,643.80, 708,612,965.70 and 127,397,146.60

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Solution

The fourth proportional to 472,408,643.80, 708,612,965.70 and 127,397,146.60 is: 191,095,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,408,643.80 : 708,612,965.70 = 127,397,146.60 : x
  2. Step 2: Convert to fraction form
    472,408,643.80/708,612,965.70 = 127,397,146.60/x
  3. Step 3: Cross multiply
    472,408,643.80x = 708,612,965.70 × 127,397,146.60
  4. Step 4: Simplify right side
    472,408,643.80x = 90,275,269,873,943,680
  5. Step 5: Solve for x
    x = 90,275,269,873,943,680/472,408,643.80
  6. Step 6: Final answer
    x = 191,095,719.90

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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.