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Finding the Fourth Proportional to 624,632.13, 861,992.28 and 348,990.05

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Solution

The fourth proportional to 624,632.13, 861,992.28 and 348,990.05 is: 481,606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,632.13 : 861,992.28 = 348,990.05 : x
  2. Step 2: Convert to fraction form
    624,632.13/861,992.28 = 348,990.05/x
  3. Step 3: Cross multiply
    624,632.13x = 861,992.28 × 348,990.05
  4. Step 4: Simplify right side
    624,632.13x = 300,826,724,586.85
  5. Step 5: Solve for x
    x = 300,826,724,586.85/624,632.13
  6. Step 6: Final answer
    x = 481,606.23

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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.