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Finding the Fourth Proportional to 559,744.61, 772,447.79 and 318,027.50

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Solution

The fourth proportional to 559,744.61, 772,447.79 and 318,027.50 is: 438,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,744.61 : 772,447.79 = 318,027.50 : x
  2. Step 2: Convert to fraction form
    559,744.61/772,447.79 = 318,027.50/x
  3. Step 3: Cross multiply
    559,744.61x = 772,447.79 × 318,027.50
  4. Step 4: Simplify right side
    559,744.61x = 245,659,641,067.81
  5. Step 5: Solve for x
    x = 245,659,641,067.81/559,744.61
  6. Step 6: Final answer
    x = 438,878.08

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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.