Home / 819,628.69-1,131,168.23-497,313.49

Finding the Fourth Proportional to 819,628.69, 1,131,168.23 and 497,313.49

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Solution

The fourth proportional to 819,628.69, 1,131,168.23 and 497,313.49 is: 686,341.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,628.69 : 1,131,168.23 = 497,313.49 : x
  2. Step 2: Convert to fraction form
    819,628.69/1,131,168.23 = 497,313.49/x
  3. Step 3: Cross multiply
    819,628.69x = 1,131,168.23 × 497,313.49
  4. Step 4: Simplify right side
    819,628.69x = 562,545,220,238.42
  5. Step 5: Solve for x
    x = 562,545,220,238.42/819,628.69
  6. Step 6: Final answer
    x = 686,341.54

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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.