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Finding the Fourth Proportional to 638,546.95, 957,377.51 and 339,237.73

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Solution

The fourth proportional to 638,546.95, 957,377.51 and 339,237.73 is: 508,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,546.95 : 957,377.51 = 339,237.73 : x
  2. Step 2: Convert to fraction form
    638,546.95/957,377.51 = 339,237.73/x
  3. Step 3: Cross multiply
    638,546.95x = 957,377.51 × 339,237.73
  4. Step 4: Simplify right side
    638,546.95x = 324,778,566,762.38
  5. Step 5: Solve for x
    x = 324,778,566,762.38/638,546.95
  6. Step 6: Final answer
    x = 508,621.28

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1.5x scale

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.