Home / 1,178,139.92-1,767,160.52-379,403.78

Finding the Fourth Proportional to 1,178,139.92, 1,767,160.52 and 379,403.78

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Solution

The fourth proportional to 1,178,139.92, 1,767,160.52 and 379,403.78 is: 569,089.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,139.92 : 1,767,160.52 = 379,403.78 : x
  2. Step 2: Convert to fraction form
    1,178,139.92/1,767,160.52 = 379,403.78/x
  3. Step 3: Cross multiply
    1,178,139.92x = 1,767,160.52 × 379,403.78
  4. Step 4: Simplify right side
    1,178,139.92x = 670,467,381,154.77
  5. Step 5: Solve for x
    x = 670,467,381,154.77/1,178,139.92
  6. Step 6: Final answer
    x = 569,089.77

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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.