Home / 1,231,402.89-1,699,319.88-687,547.92

Finding the Fourth Proportional to 1,231,402.89, 1,699,319.88 and 687,547.92

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Solution

The fourth proportional to 1,231,402.89, 1,699,319.88 and 687,547.92 is: 948,807.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,402.89 : 1,699,319.88 = 687,547.92 : x
  2. Step 2: Convert to fraction form
    1,231,402.89/1,699,319.88 = 687,547.92/x
  3. Step 3: Cross multiply
    1,231,402.89x = 1,699,319.88 × 687,547.92
  4. Step 4: Simplify right side
    1,231,402.89x = 1,168,363,848,908.65
  5. Step 5: Solve for x
    x = 1,168,363,848,908.65/1,231,402.89
  6. Step 6: Final answer
    x = 948,807.14

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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.