Home / 391,438,897.20-587,158,345.80-262,444,388.40

Finding the Fourth Proportional to 391,438,897.20, 587,158,345.80 and 262,444,388.40

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Solution

The fourth proportional to 391,438,897.20, 587,158,345.80 and 262,444,388.40 is: 393,666,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,438,897.20 : 587,158,345.80 = 262,444,388.40 : x
  2. Step 2: Convert to fraction form
    391,438,897.20/587,158,345.80 = 262,444,388.40/x
  3. Step 3: Cross multiply
    391,438,897.20x = 587,158,345.80 × 262,444,388.40
  4. Step 4: Simplify right side
    391,438,897.20x = 154,096,412,957,436,704
  5. Step 5: Solve for x
    x = 154,096,412,957,436,704/391,438,897.20
  6. Step 6: Final answer
    x = 393,666,582.60

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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.