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Finding the Fourth Proportional to 525,773.70, 788,660.55 and 210,456.90

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Solution

The fourth proportional to 525,773.70, 788,660.55 and 210,456.90 is: 315,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,773.70 : 788,660.55 = 210,456.90 : x
  2. Step 2: Convert to fraction form
    525,773.70/788,660.55 = 210,456.90/x
  3. Step 3: Cross multiply
    525,773.70x = 788,660.55 × 210,456.90
  4. Step 4: Simplify right side
    525,773.70x = 165,979,054,505.30
  5. Step 5: Solve for x
    x = 165,979,054,505.30/525,773.70
  6. Step 6: Final answer
    x = 315,685.35

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Double scale
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Similar ratio
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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.