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Finding the Fourth Proportional to 525,771.70, 788,657.55 and 210,454.90

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Solution

The fourth proportional to 525,771.70, 788,657.55 and 210,454.90 is: 315,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,771.70 : 788,657.55 = 210,454.90 : x
  2. Step 2: Convert to fraction form
    525,771.70/788,657.55 = 210,454.90/x
  3. Step 3: Cross multiply
    525,771.70x = 788,657.55 × 210,454.90
  4. Step 4: Simplify right side
    525,771.70x = 165,976,845,819.50
  5. Step 5: Solve for x
    x = 165,976,845,819.50/525,771.70
  6. Step 6: Final answer
    x = 315,682.35

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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.