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Finding the Fourth Proportional to 559,660.77, 772,334.52 and 317,956.60

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Solution

The fourth proportional to 559,660.77, 772,334.52 and 317,956.60 is: 438,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,660.77 : 772,334.52 = 317,956.60 : x
  2. Step 2: Convert to fraction form
    559,660.77/772,334.52 = 317,956.60/x
  3. Step 3: Cross multiply
    559,660.77x = 772,334.52 × 317,956.60
  4. Step 4: Simplify right side
    559,660.77x = 245,568,858,041.83
  5. Step 5: Solve for x
    x = 245,568,858,041.83/559,660.77
  6. Step 6: Final answer
    x = 438,781.62

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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.