Home / 485,916.91-729,085.86-261,014.92

Finding the Fourth Proportional to 485,916.91, 729,085.86 and 261,014.92

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Solution

The fourth proportional to 485,916.91, 729,085.86 and 261,014.92 is: 391,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,916.91 : 729,085.86 = 261,014.92 : x
  2. Step 2: Convert to fraction form
    485,916.91/729,085.86 = 261,014.92/x
  3. Step 3: Cross multiply
    485,916.91x = 729,085.86 × 261,014.92
  4. Step 4: Simplify right side
    485,916.91x = 190,302,282,470.53
  5. Step 5: Solve for x
    x = 190,302,282,470.53/485,916.91
  6. Step 6: Final answer
    x = 391,635.44

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1.5x scale

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.