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Finding the Fourth Proportional to 571,867, 857,800.50 and 391,774.84

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Solution

The fourth proportional to 571,867, 857,800.50 and 391,774.84 is: 587,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,867 : 857,800.50 = 391,774.84 : x
  2. Step 2: Convert to fraction form
    571,867/857,800.50 = 391,774.84/x
  3. Step 3: Cross multiply
    571,867x = 857,800.50 × 391,774.84
  4. Step 4: Simplify right side
    571,867x = 336,064,653,639.42
  5. Step 5: Solve for x
    x = 336,064,653,639.42/571,867
  6. Step 6: Final answer
    x = 587,662.26

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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.