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Finding the Fourth Proportional to 707,286.40, 976,081.08 and 384,980.92

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Solution

The fourth proportional to 707,286.40, 976,081.08 and 384,980.92 is: 531,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,286.40 : 976,081.08 = 384,980.92 : x
  2. Step 2: Convert to fraction form
    707,286.40/976,081.08 = 384,980.92/x
  3. Step 3: Cross multiply
    707,286.40x = 976,081.08 × 384,980.92
  4. Step 4: Simplify right side
    707,286.40x = 375,772,592,172.99
  5. Step 5: Solve for x
    x = 375,772,592,172.99/707,286.40
  6. Step 6: Final answer
    x = 531,287.74

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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.