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Finding the Fourth Proportional to 630,556.32, 870,169.92 and 344,082.72

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Solution

The fourth proportional to 630,556.32, 870,169.92 and 344,082.72 is: 474,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,556.32 : 870,169.92 = 344,082.72 : x
  2. Step 2: Convert to fraction form
    630,556.32/870,169.92 = 344,082.72/x
  3. Step 3: Cross multiply
    630,556.32x = 870,169.92 × 344,082.72
  4. Step 4: Simplify right side
    630,556.32x = 299,410,432,935.78
  5. Step 5: Solve for x
    x = 299,410,432,935.78/630,556.32
  6. Step 6: Final answer
    x = 474,835.35

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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.