Home / 645,521.40-968,282.10-329,873.40

Finding the Fourth Proportional to 645,521.40, 968,282.10 and 329,873.40

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Solution

The fourth proportional to 645,521.40, 968,282.10 and 329,873.40 is: 494,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,521.40 : 968,282.10 = 329,873.40 : x
  2. Step 2: Convert to fraction form
    645,521.40/968,282.10 = 329,873.40/x
  3. Step 3: Cross multiply
    645,521.40x = 968,282.10 × 329,873.40
  4. Step 4: Simplify right side
    645,521.40x = 319,410,508,486.14
  5. Step 5: Solve for x
    x = 319,410,508,486.14/645,521.40
  6. Step 6: Final answer
    x = 494,810.10

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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.