Home / 642,558.06-886,719.51-352,167.39

Finding the Fourth Proportional to 642,558.06, 886,719.51 and 352,167.39

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Solution

The fourth proportional to 642,558.06, 886,719.51 and 352,167.39 is: 485,985.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,558.06 : 886,719.51 = 352,167.39 : x
  2. Step 2: Convert to fraction form
    642,558.06/886,719.51 = 352,167.39/x
  3. Step 3: Cross multiply
    642,558.06x = 886,719.51 × 352,167.39
  4. Step 4: Simplify right side
    642,558.06x = 312,273,695,498.78
  5. Step 5: Solve for x
    x = 312,273,695,498.78/642,558.06
  6. Step 6: Final answer
    x = 485,985.18

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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.