Home / 472,392,689.80-708,589,034.70-127,381,192.60

Finding the Fourth Proportional to 472,392,689.80, 708,589,034.70 and 127,381,192.60

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Solution

The fourth proportional to 472,392,689.80, 708,589,034.70 and 127,381,192.60 is: 191,071,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,689.80 : 708,589,034.70 = 127,381,192.60 : x
  2. Step 2: Convert to fraction form
    472,392,689.80/708,589,034.70 = 127,381,192.60/x
  3. Step 3: Cross multiply
    472,392,689.80x = 708,589,034.70 × 127,381,192.60
  4. Step 4: Simplify right side
    472,392,689.80x = 90,260,916,303,368,784
  5. Step 5: Solve for x
    x = 90,260,916,303,368,784/472,392,689.80
  6. Step 6: Final answer
    x = 191,071,788.90

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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.