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Finding the Fourth Proportional to 648,029.20, 971,914.20 and 311,069.20

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Solution

The fourth proportional to 648,029.20, 971,914.20 and 311,069.20 is: 466,541.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,029.20 : 971,914.20 = 311,069.20 : x
  2. Step 2: Convert to fraction form
    648,029.20/971,914.20 = 311,069.20/x
  3. Step 3: Cross multiply
    648,029.20x = 971,914.20 × 311,069.20
  4. Step 4: Simplify right side
    648,029.20x = 302,332,572,662.64
  5. Step 5: Solve for x
    x = 302,332,572,662.64/648,029.20
  6. Step 6: Final answer
    x = 466,541.59

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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.