Home / 472,392,721.80-708,589,082.70-127,381,224.60

Finding the Fourth Proportional to 472,392,721.80, 708,589,082.70 and 127,381,224.60

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Solution

The fourth proportional to 472,392,721.80, 708,589,082.70 and 127,381,224.60 is: 191,071,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,721.80 : 708,589,082.70 = 127,381,224.60 : x
  2. Step 2: Convert to fraction form
    472,392,721.80/708,589,082.70 = 127,381,224.60/x
  3. Step 3: Cross multiply
    472,392,721.80x = 708,589,082.70 × 127,381,224.60
  4. Step 4: Simplify right side
    472,392,721.80x = 90,260,945,092,516,672
  5. Step 5: Solve for x
    x = 90,260,945,092,516,672/472,392,721.80
  6. Step 6: Final answer
    x = 191,071,836.90

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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.