Home / 515,107.20-710,870.92-285,649.04

Finding the Fourth Proportional to 515,107.20, 710,870.92 and 285,649.04

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Solution

The fourth proportional to 515,107.20, 710,870.92 and 285,649.04 is: 394,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,107.20 : 710,870.92 = 285,649.04 : x
  2. Step 2: Convert to fraction form
    515,107.20/710,870.92 = 285,649.04/x
  3. Step 3: Cross multiply
    515,107.20x = 710,870.92 × 285,649.04
  4. Step 4: Simplify right side
    515,107.20x = 203,059,595,861.92
  5. Step 5: Solve for x
    x = 203,059,595,861.92/515,107.20
  6. Step 6: Final answer
    x = 394,208.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.