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Finding the Fourth Proportional to 550,439.91, 759,606.82 and 320,952.87

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Solution

The fourth proportional to 550,439.91, 759,606.82 and 320,952.87 is: 442,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,439.91 : 759,606.82 = 320,952.87 : x
  2. Step 2: Convert to fraction form
    550,439.91/759,606.82 = 320,952.87/x
  3. Step 3: Cross multiply
    550,439.91x = 759,606.82 × 320,952.87
  4. Step 4: Simplify right side
    550,439.91x = 243,797,988,950.57
  5. Step 5: Solve for x
    x = 243,797,988,950.57/550,439.91
  6. Step 6: Final answer
    x = 442,914.81

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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.