Home / 763,009.50-1,144,514.31-289,695.12

Finding the Fourth Proportional to 763,009.50, 1,144,514.31 and 289,695.12

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Solution

The fourth proportional to 763,009.50, 1,144,514.31 and 289,695.12 is: 434,542.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,009.50 : 1,144,514.31 = 289,695.12 : x
  2. Step 2: Convert to fraction form
    763,009.50/1,144,514.31 = 289,695.12/x
  3. Step 3: Cross multiply
    763,009.50x = 1,144,514.31 × 289,695.12
  4. Step 4: Simplify right side
    763,009.50x = 331,560,210,377.17
  5. Step 5: Solve for x
    x = 331,560,210,377.17/763,009.50
  6. Step 6: Final answer
    x = 434,542.70

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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.