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Finding the Fourth Proportional to 522,076.90, 783,115.35 and 490,972.90

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Solution

The fourth proportional to 522,076.90, 783,115.35 and 490,972.90 is: 736,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,076.90 : 783,115.35 = 490,972.90 : x
  2. Step 2: Convert to fraction form
    522,076.90/783,115.35 = 490,972.90/x
  3. Step 3: Cross multiply
    522,076.90x = 783,115.35 × 490,972.90
  4. Step 4: Simplify right side
    522,076.90x = 384,488,414,424.02
  5. Step 5: Solve for x
    x = 384,488,414,424.02/522,076.90
  6. Step 6: Final answer
    x = 736,459.35

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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.