Home / 991,421.73-1,368,170.64-538,712.73

Finding the Fourth Proportional to 991,421.73, 1,368,170.64 and 538,712.73

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Solution

The fourth proportional to 991,421.73, 1,368,170.64 and 538,712.73 is: 743,428.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,421.73 : 1,368,170.64 = 538,712.73 : x
  2. Step 2: Convert to fraction form
    991,421.73/1,368,170.64 = 538,712.73/x
  3. Step 3: Cross multiply
    991,421.73x = 1,368,170.64 × 538,712.73
  4. Step 4: Simplify right side
    991,421.73x = 737,050,940,580.25
  5. Step 5: Solve for x
    x = 737,050,940,580.25/991,421.73
  6. Step 6: Final answer
    x = 743,428.27

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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.