Home / 519,310.90-778,889.55-145,371.70

Finding the Fourth Proportional to 519,310.90, 778,889.55 and 145,371.70

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Solution

The fourth proportional to 519,310.90, 778,889.55 and 145,371.70 is: 218,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,310.90 : 778,889.55 = 145,371.70 : x
  2. Step 2: Convert to fraction form
    519,310.90/778,889.55 = 145,371.70/x
  3. Step 3: Cross multiply
    519,310.90x = 778,889.55 × 145,371.70
  4. Step 4: Simplify right side
    519,310.90x = 113,228,497,995.74
  5. Step 5: Solve for x
    x = 113,228,497,995.74/519,310.90
  6. Step 6: Final answer
    x = 218,036.05

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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.