Home / 745,923.40-1,029,364.68-406,391.92

Finding the Fourth Proportional to 745,923.40, 1,029,364.68 and 406,391.92

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Solution

The fourth proportional to 745,923.40, 1,029,364.68 and 406,391.92 is: 560,815.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,923.40 : 1,029,364.68 = 406,391.92 : x
  2. Step 2: Convert to fraction form
    745,923.40/1,029,364.68 = 406,391.92/x
  3. Step 3: Cross multiply
    745,923.40x = 1,029,364.68 × 406,391.92
  4. Step 4: Simplify right side
    745,923.40x = 418,325,488,685.39
  5. Step 5: Solve for x
    x = 418,325,488,685.39/745,923.40
  6. Step 6: Final answer
    x = 560,815.61

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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.