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Finding the Fourth Proportional to 520,545.94, 718,348.40 and 291,100.64

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Solution

The fourth proportional to 520,545.94, 718,348.40 and 291,100.64 is: 401,716.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,545.94 : 718,348.40 = 291,100.64 : x
  2. Step 2: Convert to fraction form
    520,545.94/718,348.40 = 291,100.64/x
  3. Step 3: Cross multiply
    520,545.94x = 718,348.40 × 291,100.64
  4. Step 4: Simplify right side
    520,545.94x = 209,111,675,027.36
  5. Step 5: Solve for x
    x = 209,111,675,027.36/520,545.94
  6. Step 6: Final answer
    x = 401,716.08

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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.