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Finding the Fourth Proportional to 7,243,778.20, 10,865,667.30 and 7,243,778.20

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Solution

The fourth proportional to 7,243,778.20, 10,865,667.30 and 7,243,778.20 is: 10,865,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243,778.20 : 10,865,667.30 = 7,243,778.20 : x
  2. Step 2: Convert to fraction form
    7,243,778.20/10,865,667.30 = 7,243,778.20/x
  3. Step 3: Cross multiply
    7,243,778.20x = 10,865,667.30 × 7,243,778.20
  4. Step 4: Simplify right side
    7,243,778.20x = 78,708,483,916,192.88
  5. Step 5: Solve for x
    x = 78,708,483,916,192.88/7,243,778.20
  6. Step 6: Final answer
    x = 10,865,667.30

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Double scale
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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.