Home / 991,424.20-1,368,174.06-538,715.20

Finding the Fourth Proportional to 991,424.20, 1,368,174.06 and 538,715.20

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Solution

The fourth proportional to 991,424.20, 1,368,174.06 and 538,715.20 is: 743,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,424.20 : 1,368,174.06 = 538,715.20 : x
  2. Step 2: Convert to fraction form
    991,424.20/1,368,174.06 = 538,715.20/x
  3. Step 3: Cross multiply
    991,424.20x = 1,368,174.06 × 538,715.20
  4. Step 4: Simplify right side
    991,424.20x = 737,056,162,367.71
  5. Step 5: Solve for x
    x = 737,056,162,367.71/991,424.20
  6. Step 6: Final answer
    x = 743,431.68

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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.