Home / 519,320.20-778,980.30-219,701.20

Finding the Fourth Proportional to 519,320.20, 778,980.30 and 219,701.20

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Solution

The fourth proportional to 519,320.20, 778,980.30 and 219,701.20 is: 329,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,320.20 : 778,980.30 = 219,701.20 : x
  2. Step 2: Convert to fraction form
    519,320.20/778,980.30 = 219,701.20/x
  3. Step 3: Cross multiply
    519,320.20x = 778,980.30 × 219,701.20
  4. Step 4: Simplify right side
    519,320.20x = 171,142,906,686.36
  5. Step 5: Solve for x
    x = 171,142,906,686.36/519,320.20
  6. Step 6: Final answer
    x = 329,551.80

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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.