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Finding the Fourth Proportional to 578,834.40, 868,251.60 and 325,855.20

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Solution

The fourth proportional to 578,834.40, 868,251.60 and 325,855.20 is: 488,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,834.40 : 868,251.60 = 325,855.20 : x
  2. Step 2: Convert to fraction form
    578,834.40/868,251.60 = 325,855.20/x
  3. Step 3: Cross multiply
    578,834.40x = 868,251.60 × 325,855.20
  4. Step 4: Simplify right side
    578,834.40x = 282,924,298,768.32
  5. Step 5: Solve for x
    x = 282,924,298,768.32/578,834.40
  6. Step 6: Final answer
    x = 488,782.80

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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.