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Finding the Fourth Proportional to 7,780,337.20, 11,649,510.60 and 7,780,337.20

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Solution

The fourth proportional to 7,780,337.20, 11,649,510.60 and 7,780,337.20 is: 11,649,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780,337.20 : 11,649,510.60 = 7,780,337.20 : x
  2. Step 2: Convert to fraction form
    7,780,337.20/11,649,510.60 = 7,780,337.20/x
  3. Step 3: Cross multiply
    7,780,337.20x = 11,649,510.60 × 7,780,337.20
  4. Step 4: Simplify right side
    7,780,337.20x = 90,637,120,682,974.31
  5. Step 5: Solve for x
    x = 90,637,120,682,974.31/7,780,337.20
  6. Step 6: Final answer
    x = 11,649,510.60

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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.