Home / 1,278,165.76-1,917,249.28-436,725.76

Finding the Fourth Proportional to 1,278,165.76, 1,917,249.28 and 436,725.76

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Solution

The fourth proportional to 1,278,165.76, 1,917,249.28 and 436,725.76 is: 655,088.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,165.76 : 1,917,249.28 = 436,725.76 : x
  2. Step 2: Convert to fraction form
    1,278,165.76/1,917,249.28 = 436,725.76/x
  3. Step 3: Cross multiply
    1,278,165.76x = 1,917,249.28 × 436,725.76
  4. Step 4: Simplify right side
    1,278,165.76x = 837,312,148,917.45
  5. Step 5: Solve for x
    x = 837,312,148,917.45/1,278,165.76
  6. Step 6: Final answer
    x = 655,088.86

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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.