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Finding the Fourth Proportional to 516,255.70, 774,383.55 and 404,281.30

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Solution

The fourth proportional to 516,255.70, 774,383.55 and 404,281.30 is: 606,421.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,255.70 : 774,383.55 = 404,281.30 : x
  2. Step 2: Convert to fraction form
    516,255.70/774,383.55 = 404,281.30/x
  3. Step 3: Cross multiply
    516,255.70x = 774,383.55 × 404,281.30
  4. Step 4: Simplify right side
    516,255.70x = 313,068,788,292.62
  5. Step 5: Solve for x
    x = 313,068,788,292.62/516,255.70
  6. Step 6: Final answer
    x = 606,421.95

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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.