Home / 763,507.84-1,145,261.76-290,081.20

Finding the Fourth Proportional to 763,507.84, 1,145,261.76 and 290,081.20

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Solution

The fourth proportional to 763,507.84, 1,145,261.76 and 290,081.20 is: 435,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,507.84 : 1,145,261.76 = 290,081.20 : x
  2. Step 2: Convert to fraction form
    763,507.84/1,145,261.76 = 290,081.20/x
  3. Step 3: Cross multiply
    763,507.84x = 1,145,261.76 × 290,081.20
  4. Step 4: Simplify right side
    763,507.84x = 332,218,905,654.91
  5. Step 5: Solve for x
    x = 332,218,905,654.91/763,507.84
  6. Step 6: Final answer
    x = 435,121.80

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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.