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Finding the Fourth Proportional to 526,513.95, 788,220.88 and 326,190.21

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Solution

The fourth proportional to 526,513.95, 788,220.88 and 326,190.21 is: 488,325.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,513.95 : 788,220.88 = 326,190.21 : x
  2. Step 2: Convert to fraction form
    526,513.95/788,220.88 = 326,190.21/x
  3. Step 3: Cross multiply
    526,513.95x = 788,220.88 × 326,190.21
  4. Step 4: Simplify right side
    526,513.95x = 257,109,932,742.63
  5. Step 5: Solve for x
    x = 257,109,932,742.63/526,513.95
  6. Step 6: Final answer
    x = 488,325.02

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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.