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Finding the Fourth Proportional to 520,381.92, 718,247.07 and 338,777.63

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Solution

The fourth proportional to 520,381.92, 718,247.07 and 338,777.63 is: 467,591.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,381.92 : 718,247.07 = 338,777.63 : x
  2. Step 2: Convert to fraction form
    520,381.92/718,247.07 = 338,777.63/x
  3. Step 3: Cross multiply
    520,381.92x = 718,247.07 × 338,777.63
  4. Step 4: Simplify right side
    520,381.92x = 243,326,036,537.81
  5. Step 5: Solve for x
    x = 243,326,036,537.81/520,381.92
  6. Step 6: Final answer
    x = 467,591.26

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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.