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Finding the Fourth Proportional to 508,930.90, 763,396.35 and 446,722.90

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Solution

The fourth proportional to 508,930.90, 763,396.35 and 446,722.90 is: 670,084.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,930.90 : 763,396.35 = 446,722.90 : x
  2. Step 2: Convert to fraction form
    508,930.90/763,396.35 = 446,722.90/x
  3. Step 3: Cross multiply
    508,930.90x = 763,396.35 × 446,722.90
  4. Step 4: Simplify right side
    508,930.90x = 341,026,631,321.42
  5. Step 5: Solve for x
    x = 341,026,631,321.42/508,930.90
  6. Step 6: Final answer
    x = 670,084.35

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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.