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Finding the Fourth Proportional to 528,836.75, 729,794.72 and 290,372.75

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Solution

The fourth proportional to 528,836.75, 729,794.72 and 290,372.75 is: 400,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,836.75 : 729,794.72 = 290,372.75 : x
  2. Step 2: Convert to fraction form
    528,836.75/729,794.72 = 290,372.75/x
  3. Step 3: Cross multiply
    528,836.75x = 729,794.72 × 290,372.75
  4. Step 4: Simplify right side
    528,836.75x = 211,912,499,781.88
  5. Step 5: Solve for x
    x = 211,912,499,781.88/528,836.75
  6. Step 6: Final answer
    x = 400,714.40

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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.