Home / 386,856,992.40-580,285,488.60-257,043,670.80

Finding the Fourth Proportional to 386,856,992.40, 580,285,488.60 and 257,043,670.80

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Solution

The fourth proportional to 386,856,992.40, 580,285,488.60 and 257,043,670.80 is: 385,565,506.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,856,992.40 : 580,285,488.60 = 257,043,670.80 : x
  2. Step 2: Convert to fraction form
    386,856,992.40/580,285,488.60 = 257,043,670.80/x
  3. Step 3: Cross multiply
    386,856,992.40x = 580,285,488.60 × 257,043,670.80
  4. Step 4: Simplify right side
    386,856,992.40x = 149,158,712,101,715,552
  5. Step 5: Solve for x
    x = 149,158,712,101,715,552/386,856,992.40
  6. Step 6: Final answer
    x = 385,565,506.20

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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.