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Finding the Fourth Proportional to 520,677.77, 718,601.88 and 291,247.80

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Solution

The fourth proportional to 520,677.77, 718,601.88 and 291,247.80 is: 401,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,677.77 : 718,601.88 = 291,247.80 : x
  2. Step 2: Convert to fraction form
    520,677.77/718,601.88 = 291,247.80/x
  3. Step 3: Cross multiply
    520,677.77x = 718,601.88 × 291,247.80
  4. Step 4: Simplify right side
    520,677.77x = 209,291,217,427.15
  5. Step 5: Solve for x
    x = 209,291,217,427.15/520,677.77
  6. Step 6: Final answer
    x = 401,959.19

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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.