Home / 9,347,974.90-12,900,156.19-5,428,694.72

Finding the Fourth Proportional to 9,347,974.90, 12,900,156.19 and 5,428,694.72

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Solution

The fourth proportional to 9,347,974.90, 12,900,156.19 and 5,428,694.72 is: 7,491,570.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347,974.90 : 12,900,156.19 = 5,428,694.72 : x
  2. Step 2: Convert to fraction form
    9,347,974.90/12,900,156.19 = 5,428,694.72/x
  3. Step 3: Cross multiply
    9,347,974.90x = 12,900,156.19 × 5,428,694.72
  4. Step 4: Simplify right side
    9,347,974.90x = 70,031,009,814,506.97
  5. Step 5: Solve for x
    x = 70,031,009,814,506.97/9,347,974.90
  6. Step 6: Final answer
    x = 7,491,570.16

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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.