Home / 718,192.28-991,104.95-395,907.75

Finding the Fourth Proportional to 718,192.28, 991,104.95 and 395,907.75

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Solution

The fourth proportional to 718,192.28, 991,104.95 and 395,907.75 is: 546,352.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,192.28 : 991,104.95 = 395,907.75 : x
  2. Step 2: Convert to fraction form
    718,192.28/991,104.95 = 395,907.75/x
  3. Step 3: Cross multiply
    718,192.28x = 991,104.95 × 395,907.75
  4. Step 4: Simplify right side
    718,192.28x = 392,386,128,788.82
  5. Step 5: Solve for x
    x = 392,386,128,788.82/718,192.28
  6. Step 6: Final answer
    x = 546,352.47

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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.