Home / 472,392,906.80-708,589,360.20-127,381,409.60

Finding the Fourth Proportional to 472,392,906.80, 708,589,360.20 and 127,381,409.60

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Solution

The fourth proportional to 472,392,906.80, 708,589,360.20 and 127,381,409.60 is: 191,072,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,906.80 : 708,589,360.20 = 127,381,409.60 : x
  2. Step 2: Convert to fraction form
    472,392,906.80/708,589,360.20 = 127,381,409.60/x
  3. Step 3: Cross multiply
    472,392,906.80x = 708,589,360.20 × 127,381,409.60
  4. Step 4: Simplify right side
    472,392,906.80x = 90,261,111,529,838,144
  5. Step 5: Solve for x
    x = 90,261,111,529,838,144/472,392,906.80
  6. Step 6: Final answer
    x = 191,072,114.40

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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.