Home / 815,485,326.91-1,222,727,379.67-316,913,699.90

Finding the Fourth Proportional to 815,485,326.91, 1,222,727,379.67 and 316,913,699.90

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Solution

The fourth proportional to 815,485,326.91, 1,222,727,379.67 and 316,913,699.90 is: 475,176,002.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,485,326.91 : 1,222,727,379.67 = 316,913,699.90 : x
  2. Step 2: Convert to fraction form
    815,485,326.91/1,222,727,379.67 = 316,913,699.90/x
  3. Step 3: Cross multiply
    815,485,326.91x = 1,222,727,379.67 × 316,913,699.90
  4. Step 4: Simplify right side
    815,485,326.91x = 387,499,057,860,251,712
  5. Step 5: Solve for x
    x = 387,499,057,860,251,712/815,485,326.91
  6. Step 6: Final answer
    x = 475,176,002.65

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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.