Home / 1,242,678.65-1,714,906.49-691,402.32

Finding the Fourth Proportional to 1,242,678.65, 1,714,906.49 and 691,402.32

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Solution

The fourth proportional to 1,242,678.65, 1,714,906.49 and 691,402.32 is: 954,140.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,678.65 : 1,714,906.49 = 691,402.32 : x
  2. Step 2: Convert to fraction form
    1,242,678.65/1,714,906.49 = 691,402.32/x
  3. Step 3: Cross multiply
    1,242,678.65x = 1,714,906.49 × 691,402.32
  4. Step 4: Simplify right side
    1,242,678.65x = 1,185,690,322,312.05
  5. Step 5: Solve for x
    x = 1,185,690,322,312.05/1,242,678.65
  6. Step 6: Final answer
    x = 954,140.74

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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.