Home / 718,261.94-991,208.25-395,983.57

Finding the Fourth Proportional to 718,261.94, 991,208.25 and 395,983.57

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Solution

The fourth proportional to 718,261.94, 991,208.25 and 395,983.57 is: 546,461.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,261.94 : 991,208.25 = 395,983.57 : x
  2. Step 2: Convert to fraction form
    718,261.94/991,208.25 = 395,983.57/x
  3. Step 3: Cross multiply
    718,261.94x = 991,208.25 × 395,983.57
  4. Step 4: Simplify right side
    718,261.94x = 392,502,178,724.50
  5. Step 5: Solve for x
    x = 392,502,178,724.50/718,261.94
  6. Step 6: Final answer
    x = 546,461.06

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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.