Home / 676,221.81-933,186.12-389,760.36

Finding the Fourth Proportional to 676,221.81, 933,186.12 and 389,760.36

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Solution

The fourth proportional to 676,221.81, 933,186.12 and 389,760.36 is: 537,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,221.81 : 933,186.12 = 389,760.36 : x
  2. Step 2: Convert to fraction form
    676,221.81/933,186.12 = 389,760.36/x
  3. Step 3: Cross multiply
    676,221.81x = 933,186.12 × 389,760.36
  4. Step 4: Simplify right side
    676,221.81x = 363,718,958,078.20
  5. Step 5: Solve for x
    x = 363,718,958,078.20/676,221.81
  6. Step 6: Final answer
    x = 537,869.31

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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.