Home / 772,640.60-1,158,960.90-489,205.40

Finding the Fourth Proportional to 772,640.60, 1,158,960.90 and 489,205.40

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Solution

The fourth proportional to 772,640.60, 1,158,960.90 and 489,205.40 is: 733,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,640.60 : 1,158,960.90 = 489,205.40 : x
  2. Step 2: Convert to fraction form
    772,640.60/1,158,960.90 = 489,205.40/x
  3. Step 3: Cross multiply
    772,640.60x = 1,158,960.90 × 489,205.40
  4. Step 4: Simplify right side
    772,640.60x = 566,969,930,668.86
  5. Step 5: Solve for x
    x = 566,969,930,668.86/772,640.60
  6. Step 6: Final answer
    x = 733,808.10

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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.