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Finding the Fourth Proportional to 893,535.80, 1,340,303.70 and 388,338.80

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Solution

The fourth proportional to 893,535.80, 1,340,303.70 and 388,338.80 is: 582,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,535.80 : 1,340,303.70 = 388,338.80 : x
  2. Step 2: Convert to fraction form
    893,535.80/1,340,303.70 = 388,338.80/x
  3. Step 3: Cross multiply
    893,535.80x = 1,340,303.70 × 388,338.80
  4. Step 4: Simplify right side
    893,535.80x = 520,491,930,493.56
  5. Step 5: Solve for x
    x = 520,491,930,493.56/893,535.80
  6. Step 6: Final answer
    x = 582,508.20

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Double scale
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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.