Home / 858,346.80-1,286,418.60-479,266.80

Finding the Fourth Proportional to 858,346.80, 1,286,418.60 and 479,266.80

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Solution

The fourth proportional to 858,346.80, 1,286,418.60 and 479,266.80 is: 718,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,346.80 : 1,286,418.60 = 479,266.80 : x
  2. Step 2: Convert to fraction form
    858,346.80/1,286,418.60 = 479,266.80/x
  3. Step 3: Cross multiply
    858,346.80x = 1,286,418.60 × 479,266.80
  4. Step 4: Simplify right side
    858,346.80x = 616,537,725,882.48
  5. Step 5: Solve for x
    x = 616,537,725,882.48/858,346.80
  6. Step 6: Final answer
    x = 718,285.11

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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.