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Finding the Fourth Proportional to 522,383.40, 720,763.20 and 331,327.08

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Solution

The fourth proportional to 522,383.40, 720,763.20 and 331,327.08 is: 457,151.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,383.40 : 720,763.20 = 331,327.08 : x
  2. Step 2: Convert to fraction form
    522,383.40/720,763.20 = 331,327.08/x
  3. Step 3: Cross multiply
    522,383.40x = 720,763.20 × 331,327.08
  4. Step 4: Simplify right side
    522,383.40x = 238,808,366,427.46
  5. Step 5: Solve for x
    x = 238,808,366,427.46/522,383.40
  6. Step 6: Final answer
    x = 457,151.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.