Home / 820,126.43-1,131,775.18-457,550.36

Finding the Fourth Proportional to 820,126.43, 1,131,775.18 and 457,550.36

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Solution

The fourth proportional to 820,126.43, 1,131,775.18 and 457,550.36 is: 631,419.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,126.43 : 1,131,775.18 = 457,550.36 : x
  2. Step 2: Convert to fraction form
    820,126.43/1,131,775.18 = 457,550.36/x
  3. Step 3: Cross multiply
    820,126.43x = 1,131,775.18 × 457,550.36
  4. Step 4: Simplify right side
    820,126.43x = 517,844,141,048.07
  5. Step 5: Solve for x
    x = 517,844,141,048.07/820,126.43
  6. Step 6: Final answer
    x = 631,419.89

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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.