Home / 718,985.52-992,023.11-439,512.12

Finding the Fourth Proportional to 718,985.52, 992,023.11 and 439,512.12

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Solution

The fourth proportional to 718,985.52, 992,023.11 and 439,512.12 is: 606,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,985.52 : 992,023.11 = 439,512.12 : x
  2. Step 2: Convert to fraction form
    718,985.52/992,023.11 = 439,512.12/x
  3. Step 3: Cross multiply
    718,985.52x = 992,023.11 × 439,512.12
  4. Step 4: Simplify right side
    718,985.52x = 436,006,180,165.09
  5. Step 5: Solve for x
    x = 436,006,180,165.09/718,985.52
  6. Step 6: Final answer
    x = 606,418.58

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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.