Home / 1,323,015.78-1,982,026.38-781,656.72

Finding the Fourth Proportional to 1,323,015.78, 1,982,026.38 and 781,656.72

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Solution

The fourth proportional to 1,323,015.78, 1,982,026.38 and 781,656.72 is: 1,171,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323,015.78 : 1,982,026.38 = 781,656.72 : x
  2. Step 2: Convert to fraction form
    1,323,015.78/1,982,026.38 = 781,656.72/x
  3. Step 3: Cross multiply
    1,323,015.78x = 1,982,026.38 × 781,656.72
  4. Step 4: Simplify right side
    1,323,015.78x = 1,549,264,239,144.27
  5. Step 5: Solve for x
    x = 1,549,264,239,144.27/1,323,015.78
  6. Step 6: Final answer
    x = 1,171,009.65

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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.