Home / 8,390,812.10-12,589,328.55-8,079,772.10

Finding the Fourth Proportional to 8,390,812.10, 12,589,328.55 and 8,079,772.10

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Solution

The fourth proportional to 8,390,812.10, 12,589,328.55 and 8,079,772.10 is: 12,122,653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390,812.10 : 12,589,328.55 = 8,079,772.10 : x
  2. Step 2: Convert to fraction form
    8,390,812.10/12,589,328.55 = 8,079,772.10/x
  3. Step 3: Cross multiply
    8,390,812.10x = 12,589,328.55 × 8,079,772.10
  4. Step 4: Simplify right side
    8,390,812.10x = 101,718,905,576,023.45
  5. Step 5: Solve for x
    x = 101,718,905,576,023.45/8,390,812.10
  6. Step 6: Final answer
    x = 12,122,653.25

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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.