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Finding the Fourth Proportional to 8,503,072.80, 12,762,074.16 and 4,720,826.40

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Solution

The fourth proportional to 8,503,072.80, 12,762,074.16 and 4,720,826.40 is: 7,085,384.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,503,072.80 : 12,762,074.16 = 4,720,826.40 : x
  2. Step 2: Convert to fraction form
    8,503,072.80/12,762,074.16 = 4,720,826.40/x
  3. Step 3: Cross multiply
    8,503,072.80x = 12,762,074.16 × 4,720,826.40
  4. Step 4: Simplify right side
    8,503,072.80x = 60,247,536,613,285.83
  5. Step 5: Solve for x
    x = 60,247,536,613,285.83/8,503,072.80
  6. Step 6: Final answer
    x = 7,085,384.08

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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.