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Finding the Fourth Proportional to 672,736.96, 928,601.97 and 400,890.13

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Solution

The fourth proportional to 672,736.96, 928,601.97 and 400,890.13 is: 553,362.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,736.96 : 928,601.97 = 400,890.13 : x
  2. Step 2: Convert to fraction form
    672,736.96/928,601.97 = 400,890.13/x
  3. Step 3: Cross multiply
    672,736.96x = 928,601.97 × 400,890.13
  4. Step 4: Simplify right side
    672,736.96x = 372,267,364,471.56
  5. Step 5: Solve for x
    x = 372,267,364,471.56/672,736.96
  6. Step 6: Final answer
    x = 553,362.44

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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.