Home / 820,378.66-1,132,120.38-457,798.66

Finding the Fourth Proportional to 820,378.66, 1,132,120.38 and 457,798.66

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Solution

The fourth proportional to 820,378.66, 1,132,120.38 and 457,798.66 is: 631,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,378.66 : 1,132,120.38 = 457,798.66 : x
  2. Step 2: Convert to fraction form
    820,378.66/1,132,120.38 = 457,798.66/x
  3. Step 3: Cross multiply
    820,378.66x = 1,132,120.38 × 457,798.66
  4. Step 4: Simplify right side
    820,378.66x = 518,283,192,922.69
  5. Step 5: Solve for x
    x = 518,283,192,922.69/820,378.66
  6. Step 6: Final answer
    x = 631,760.94

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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.