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Finding the Fourth Proportional to 908,256.80, 1,361,218.80 and 433,920.80

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Solution

The fourth proportional to 908,256.80, 1,361,218.80 and 433,920.80 is: 650,323.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,256.80 : 1,361,218.80 = 433,920.80 : x
  2. Step 2: Convert to fraction form
    908,256.80/1,361,218.80 = 433,920.80/x
  3. Step 3: Cross multiply
    908,256.80x = 1,361,218.80 × 433,920.80
  4. Step 4: Simplify right side
    908,256.80x = 590,661,150,671.04
  5. Step 5: Solve for x
    x = 590,661,150,671.04/908,256.80
  6. Step 6: Final answer
    x = 650,323.95

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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.