Home / 684,219.60-1,025,638.20-310,510.80

Finding the Fourth Proportional to 684,219.60, 1,025,638.20 and 310,510.80

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Solution

The fourth proportional to 684,219.60, 1,025,638.20 and 310,510.80 is: 465,452.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,219.60 : 1,025,638.20 = 310,510.80 : x
  2. Step 2: Convert to fraction form
    684,219.60/1,025,638.20 = 310,510.80/x
  3. Step 3: Cross multiply
    684,219.60x = 1,025,638.20 × 310,510.80
  4. Step 4: Simplify right side
    684,219.60x = 318,471,737,992.56
  5. Step 5: Solve for x
    x = 318,471,737,992.56/684,219.60
  6. Step 6: Final answer
    x = 465,452.52

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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.