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Finding the Fourth Proportional to 893,145.90, 1,339,718.85 and 538,851.90

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Solution

The fourth proportional to 893,145.90, 1,339,718.85 and 538,851.90 is: 808,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,145.90 : 1,339,718.85 = 538,851.90 : x
  2. Step 2: Convert to fraction form
    893,145.90/1,339,718.85 = 538,851.90/x
  3. Step 3: Cross multiply
    893,145.90x = 1,339,718.85 × 538,851.90
  4. Step 4: Simplify right side
    893,145.90x = 721,910,047,788.32
  5. Step 5: Solve for x
    x = 721,910,047,788.32/893,145.90
  6. Step 6: Final answer
    x = 808,277.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.