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Finding the Fourth Proportional to 653,550.80, 979,937.40 and 338,622.80

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Solution

The fourth proportional to 653,550.80, 979,937.40 and 338,622.80 is: 507,732.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,550.80 : 979,937.40 = 338,622.80 : x
  2. Step 2: Convert to fraction form
    653,550.80/979,937.40 = 338,622.80/x
  3. Step 3: Cross multiply
    653,550.80x = 979,937.40 × 338,622.80
  4. Step 4: Simplify right side
    653,550.80x = 331,829,146,212.72
  5. Step 5: Solve for x
    x = 331,829,146,212.72/653,550.80
  6. Step 6: Final answer
    x = 507,732.75

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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.