Home / 8,480,072.60-12,720,108.90-5,078,850.20

Finding the Fourth Proportional to 8,480,072.60, 12,720,108.90 and 5,078,850.20

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Solution

The fourth proportional to 8,480,072.60, 12,720,108.90 and 5,078,850.20 is: 7,618,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480,072.60 : 12,720,108.90 = 5,078,850.20 : x
  2. Step 2: Convert to fraction form
    8,480,072.60/12,720,108.90 = 5,078,850.20/x
  3. Step 3: Cross multiply
    8,480,072.60x = 12,720,108.90 × 5,078,850.20
  4. Step 4: Simplify right side
    8,480,072.60x = 64,603,527,630,786.78
  5. Step 5: Solve for x
    x = 64,603,527,630,786.78/8,480,072.60
  6. Step 6: Final answer
    x = 7,618,275.30

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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.