Home / 391,458,007.20-587,187,010.80-262,463,498.40

Finding the Fourth Proportional to 391,458,007.20, 587,187,010.80 and 262,463,498.40

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Solution

The fourth proportional to 391,458,007.20, 587,187,010.80 and 262,463,498.40 is: 393,695,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,458,007.20 : 587,187,010.80 = 262,463,498.40 : x
  2. Step 2: Convert to fraction form
    391,458,007.20/587,187,010.80 = 262,463,498.40/x
  3. Step 3: Cross multiply
    391,458,007.20x = 587,187,010.80 × 262,463,498.40
  4. Step 4: Simplify right side
    391,458,007.20x = 154,115,157,069,606,560
  5. Step 5: Solve for x
    x = 154,115,157,069,606,560/391,458,007.20
  6. Step 6: Final answer
    x = 393,695,247.60

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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.