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Finding the Fourth Proportional to 624,628, 861,986.64 and 356,350.24

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Solution

The fourth proportional to 624,628, 861,986.64 and 356,350.24 is: 491,763.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,628 : 861,986.64 = 356,350.24 : x
  2. Step 2: Convert to fraction form
    624,628/861,986.64 = 356,350.24/x
  3. Step 3: Cross multiply
    624,628x = 861,986.64 × 356,350.24
  4. Step 4: Simplify right side
    624,628x = 307,169,146,040.79
  5. Step 5: Solve for x
    x = 307,169,146,040.79/624,628
  6. Step 6: Final answer
    x = 491,763.33

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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.