Home / 1,231,309.39-1,699,095.12-687,345.08

Finding the Fourth Proportional to 1,231,309.39, 1,699,095.12 and 687,345.08

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Solution

The fourth proportional to 1,231,309.39, 1,699,095.12 and 687,345.08 is: 948,473.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,309.39 : 1,699,095.12 = 687,345.08 : x
  2. Step 2: Convert to fraction form
    1,231,309.39/1,699,095.12 = 687,345.08/x
  3. Step 3: Cross multiply
    1,231,309.39x = 1,699,095.12 × 687,345.08
  4. Step 4: Simplify right side
    1,231,309.39x = 1,167,864,662,688.53
  5. Step 5: Solve for x
    x = 1,167,864,662,688.53/1,231,309.39
  6. Step 6: Final answer
    x = 948,473.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.