Home / 386,857,223.40-580,285,835.10-257,043,901.80

Finding the Fourth Proportional to 386,857,223.40, 580,285,835.10 and 257,043,901.80

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Solution

The fourth proportional to 386,857,223.40, 580,285,835.10 and 257,043,901.80 is: 385,565,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,857,223.40 : 580,285,835.10 = 257,043,901.80 : x
  2. Step 2: Convert to fraction form
    386,857,223.40/580,285,835.10 = 257,043,901.80/x
  3. Step 3: Cross multiply
    386,857,223.40x = 580,285,835.10 × 257,043,901.80
  4. Step 4: Simplify right side
    386,857,223.40x = 149,158,935,213,375,392
  5. Step 5: Solve for x
    x = 149,158,935,213,375,392/386,857,223.40
  6. Step 6: Final answer
    x = 385,565,852.70

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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.