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Finding the Fourth Proportional to 637,990.16, 957,116.45 and 438,404.54

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Solution

The fourth proportional to 637,990.16, 957,116.45 and 438,404.54 is: 657,696.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,990.16 : 957,116.45 = 438,404.54 : x
  2. Step 2: Convert to fraction form
    637,990.16/957,116.45 = 438,404.54/x
  3. Step 3: Cross multiply
    637,990.16x = 957,116.45 × 438,404.54
  4. Step 4: Simplify right side
    637,990.16x = 419,604,193,299.11
  5. Step 5: Solve for x
    x = 419,604,193,299.11/637,990.16
  6. Step 6: Final answer
    x = 657,696.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.