Home / 786,433.93-1,085,268.51-442,269.79

Finding the Fourth Proportional to 786,433.93, 1,085,268.51 and 442,269.79

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Solution

The fourth proportional to 786,433.93, 1,085,268.51 and 442,269.79 is: 610,326.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,433.93 : 1,085,268.51 = 442,269.79 : x
  2. Step 2: Convert to fraction form
    786,433.93/1,085,268.51 = 442,269.79/x
  3. Step 3: Cross multiply
    786,433.93x = 1,085,268.51 × 442,269.79
  4. Step 4: Simplify right side
    786,433.93x = 479,981,473,298.14
  5. Step 5: Solve for x
    x = 479,981,473,298.14/786,433.93
  6. Step 6: Final answer
    x = 610,326.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.