Home / 819,626.69-1,131,165.47-497,311.49

Finding the Fourth Proportional to 819,626.69, 1,131,165.47 and 497,311.49

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Solution

The fourth proportional to 819,626.69, 1,131,165.47 and 497,311.49 is: 686,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,626.69 : 1,131,165.47 = 497,311.49 : x
  2. Step 2: Convert to fraction form
    819,626.69/1,131,165.47 = 497,311.49/x
  3. Step 3: Cross multiply
    819,626.69x = 1,131,165.47 × 497,311.49
  4. Step 4: Simplify right side
    819,626.69x = 562,541,585,322.25
  5. Step 5: Solve for x
    x = 562,541,585,322.25/819,626.69
  6. Step 6: Final answer
    x = 686,338.78

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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.