Home / 858,425.80-1,286,537.10-479,345.80

Finding the Fourth Proportional to 858,425.80, 1,286,537.10 and 479,345.80

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Solution

The fourth proportional to 858,425.80, 1,286,537.10 and 479,345.80 is: 718,403.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,425.80 : 1,286,537.10 = 479,345.80 : x
  2. Step 2: Convert to fraction form
    858,425.80/1,286,537.10 = 479,345.80/x
  3. Step 3: Cross multiply
    858,425.80x = 1,286,537.10 × 479,345.80
  4. Step 4: Simplify right side
    858,425.80x = 616,696,155,429.18
  5. Step 5: Solve for x
    x = 616,696,155,429.18/858,425.80
  6. Step 6: Final answer
    x = 718,403.57

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Double scale
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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.