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Finding the Fourth Proportional to 7,777,145.39, 11,665,718.08 and 7,777,145.39

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Solution

The fourth proportional to 7,777,145.39, 11,665,718.08 and 7,777,145.39 is: 11,665,718.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777,145.39 : 11,665,718.08 = 7,777,145.39 : x
  2. Step 2: Convert to fraction form
    7,777,145.39/11,665,718.08 = 7,777,145.39/x
  3. Step 3: Cross multiply
    7,777,145.39x = 11,665,718.08 × 7,777,145.39
  4. Step 4: Simplify right side
    7,777,145.39x = 90,725,985,509,140.20
  5. Step 5: Solve for x
    x = 90,725,985,509,140.20/7,777,145.39
  6. Step 6: Final answer
    x = 11,665,718.08

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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.