Home / 820,428.11-1,132,247.63-457,922.69

Finding the Fourth Proportional to 820,428.11, 1,132,247.63 and 457,922.69

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Solution

The fourth proportional to 820,428.11, 1,132,247.63 and 457,922.69 is: 631,965.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,428.11 : 1,132,247.63 = 457,922.69 : x
  2. Step 2: Convert to fraction form
    820,428.11/1,132,247.63 = 457,922.69/x
  3. Step 3: Cross multiply
    820,428.11x = 1,132,247.63 × 457,922.69
  4. Step 4: Simplify right side
    820,428.11x = 518,481,878,186.11
  5. Step 5: Solve for x
    x = 518,481,878,186.11/820,428.11
  6. Step 6: Final answer
    x = 631,965.03

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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.