Home / 385,512.20-577,685.10-326,025.80

Finding the Fourth Proportional to 385,512.20, 577,685.10 and 326,025.80

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Solution

The fourth proportional to 385,512.20, 577,685.10 and 326,025.80 is: 488,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,512.20 : 577,685.10 = 326,025.80 : x
  2. Step 2: Convert to fraction form
    385,512.20/577,685.10 = 326,025.80/x
  3. Step 3: Cross multiply
    385,512.20x = 577,685.10 × 326,025.80
  4. Step 4: Simplify right side
    385,512.20x = 188,340,246,875.58
  5. Step 5: Solve for x
    x = 188,340,246,875.58/385,512.20
  6. Step 6: Final answer
    x = 488,545.49

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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.