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Finding the Fourth Proportional to 630,219.80, 945,329.70 and 488,502.20

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Solution

The fourth proportional to 630,219.80, 945,329.70 and 488,502.20 is: 732,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,219.80 : 945,329.70 = 488,502.20 : x
  2. Step 2: Convert to fraction form
    630,219.80/945,329.70 = 488,502.20/x
  3. Step 3: Cross multiply
    630,219.80x = 945,329.70 × 488,502.20
  4. Step 4: Simplify right side
    630,219.80x = 461,795,638,175.34
  5. Step 5: Solve for x
    x = 461,795,638,175.34/630,219.80
  6. Step 6: Final answer
    x = 732,753.30

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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.