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Finding the Fourth Proportional to 630,082.60, 869,521.54 and 343,600.20

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Solution

The fourth proportional to 630,082.60, 869,521.54 and 343,600.20 is: 474,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,082.60 : 869,521.54 = 343,600.20 : x
  2. Step 2: Convert to fraction form
    630,082.60/869,521.54 = 343,600.20/x
  3. Step 3: Cross multiply
    630,082.60x = 869,521.54 × 343,600.20
  4. Step 4: Simplify right side
    630,082.60x = 298,767,775,048.31
  5. Step 5: Solve for x
    x = 298,767,775,048.31/630,082.60
  6. Step 6: Final answer
    x = 474,172.39

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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.