Home / 820,215.84-1,131,896.28-457,618.14

Finding the Fourth Proportional to 820,215.84, 1,131,896.28 and 457,618.14

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Solution

The fourth proportional to 820,215.84, 1,131,896.28 and 457,618.14 is: 631,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,215.84 : 1,131,896.28 = 457,618.14 : x
  2. Step 2: Convert to fraction form
    820,215.84/1,131,896.28 = 457,618.14/x
  3. Step 3: Cross multiply
    820,215.84x = 1,131,896.28 × 457,618.14
  4. Step 4: Simplify right side
    820,215.84x = 517,976,270,326.52
  5. Step 5: Solve for x
    x = 517,976,270,326.52/820,215.84
  6. Step 6: Final answer
    x = 631,512.15

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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.