Home / 1,387,588,828.32-2,081,505,585.66-391,618,730.04

Finding the Fourth Proportional to 1,387,588,828.32, 2,081,505,585.66 and 391,618,730.04

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Solution

The fourth proportional to 1,387,588,828.32, 2,081,505,585.66 and 391,618,730.04 is: 587,462,623.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,588,828.32 : 2,081,505,585.66 = 391,618,730.04 : x
  2. Step 2: Convert to fraction form
    1,387,588,828.32/2,081,505,585.66 = 391,618,730.04/x
  3. Step 3: Cross multiply
    1,387,588,828.32x = 2,081,505,585.66 × 391,618,730.04
  4. Step 4: Simplify right side
    1,387,588,828.32x = 815,156,574,027,335,680
  5. Step 5: Solve for x
    x = 815,156,574,027,335,680/1,387,588,828.32
  6. Step 6: Final answer
    x = 587,462,623.93

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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.