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Finding the Fourth Proportional to 578,778.40, 868,052.40 and 279,258.40

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Solution

The fourth proportional to 578,778.40, 868,052.40 and 279,258.40 is: 418,832.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,778.40 : 868,052.40 = 279,258.40 : x
  2. Step 2: Convert to fraction form
    578,778.40/868,052.40 = 279,258.40/x
  3. Step 3: Cross multiply
    578,778.40x = 868,052.40 × 279,258.40
  4. Step 4: Simplify right side
    578,778.40x = 242,410,924,340.16
  5. Step 5: Solve for x
    x = 242,410,924,340.16/578,778.40
  6. Step 6: Final answer
    x = 418,832.02

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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.