Home / 9,120,908.91-12,586,300.45-5,200,116.81

Finding the Fourth Proportional to 9,120,908.91, 12,586,300.45 and 5,200,116.81

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Solution

The fourth proportional to 9,120,908.91, 12,586,300.45 and 5,200,116.81 is: 7,175,845.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120,908.91 : 12,586,300.45 = 5,200,116.81 : x
  2. Step 2: Convert to fraction form
    9,120,908.91/12,586,300.45 = 5,200,116.81/x
  3. Step 3: Cross multiply
    9,120,908.91x = 12,586,300.45 × 5,200,116.81
  4. Step 4: Simplify right side
    9,120,908.91x = 65,450,232,545,755.55
  5. Step 5: Solve for x
    x = 65,450,232,545,755.55/9,120,908.91
  6. Step 6: Final answer
    x = 7,175,845.43

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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.