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Finding the Fourth Proportional to 647,444.80, 970,821.60 and 273,044.80

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Solution

The fourth proportional to 647,444.80, 970,821.60 and 273,044.80 is: 409,421.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,444.80 : 970,821.60 = 273,044.80 : x
  2. Step 2: Convert to fraction form
    647,444.80/970,821.60 = 273,044.80/x
  3. Step 3: Cross multiply
    647,444.80x = 970,821.60 × 273,044.80
  4. Step 4: Simplify right side
    647,444.80x = 265,077,789,607.68
  5. Step 5: Solve for x
    x = 265,077,789,607.68/647,444.80
  6. Step 6: Final answer
    x = 409,421.45

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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.