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Finding the Fourth Proportional to 719,402.73, 993,071.39 and 490,714.89

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Solution

The fourth proportional to 719,402.73, 993,071.39 and 490,714.89 is: 677,388.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,402.73 : 993,071.39 = 490,714.89 : x
  2. Step 2: Convert to fraction form
    719,402.73/993,071.39 = 490,714.89/x
  3. Step 3: Cross multiply
    719,402.73x = 993,071.39 × 490,714.89
  4. Step 4: Simplify right side
    719,402.73x = 487,314,915,452.42
  5. Step 5: Solve for x
    x = 487,314,915,452.42/719,402.73
  6. Step 6: Final answer
    x = 677,388.19

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.