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Finding the Fourth Proportional to 630,081.60, 869,520.16 and 343,599.20

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Solution

The fourth proportional to 630,081.60, 869,520.16 and 343,599.20 is: 474,171.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,081.60 : 869,520.16 = 343,599.20 : x
  2. Step 2: Convert to fraction form
    630,081.60/869,520.16 = 343,599.20/x
  3. Step 3: Cross multiply
    630,081.60x = 869,520.16 × 343,599.20
  4. Step 4: Simplify right side
    630,081.60x = 298,766,431,359.87
  5. Step 5: Solve for x
    x = 298,766,431,359.87/630,081.60
  6. Step 6: Final answer
    x = 474,171.01

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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.