Home / 763,406.20-1,145,109.30-231,009.40

Finding the Fourth Proportional to 763,406.20, 1,145,109.30 and 231,009.40

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Solution

The fourth proportional to 763,406.20, 1,145,109.30 and 231,009.40 is: 346,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,406.20 : 1,145,109.30 = 231,009.40 : x
  2. Step 2: Convert to fraction form
    763,406.20/1,145,109.30 = 231,009.40/x
  3. Step 3: Cross multiply
    763,406.20x = 1,145,109.30 × 231,009.40
  4. Step 4: Simplify right side
    763,406.20x = 264,531,012,327.42
  5. Step 5: Solve for x
    x = 264,531,012,327.42/763,406.20
  6. Step 6: Final answer
    x = 346,514.10

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