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Finding the Fourth Proportional to 672,736.73, 928,601.62 and 400,889.88

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Solution

The fourth proportional to 672,736.73, 928,601.62 and 400,889.88 is: 553,362.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,736.73 : 928,601.62 = 400,889.88 : x
  2. Step 2: Convert to fraction form
    672,736.73/928,601.62 = 400,889.88/x
  3. Step 3: Cross multiply
    672,736.73x = 928,601.62 × 400,889.88
  4. Step 4: Simplify right side
    672,736.73x = 372,266,991,007.38
  5. Step 5: Solve for x
    x = 372,266,991,007.38/672,736.73
  6. Step 6: Final answer
    x = 553,362.08

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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.