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Finding the Fourth Proportional to 550,439.16, 759,605.79 and 320,952.12

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Solution

The fourth proportional to 550,439.16, 759,605.79 and 320,952.12 is: 442,913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,439.16 : 759,605.79 = 320,952.12 : x
  2. Step 2: Convert to fraction form
    550,439.16/759,605.79 = 320,952.12/x
  3. Step 3: Cross multiply
    550,439.16x = 759,605.79 × 320,952.12
  4. Step 4: Simplify right side
    550,439.16x = 243,797,087,060.01
  5. Step 5: Solve for x
    x = 243,797,087,060.01/550,439.16
  6. Step 6: Final answer
    x = 442,913.78

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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.