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Finding the Fourth Proportional to 559,661.27, 772,335.21 and 317,957.11

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Solution

The fourth proportional to 559,661.27, 772,335.21 and 317,957.11 is: 438,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,661.27 : 772,335.21 = 317,957.11 : x
  2. Step 2: Convert to fraction form
    559,661.27/772,335.21 = 317,957.11/x
  3. Step 3: Cross multiply
    559,661.27x = 772,335.21 × 317,957.11
  4. Step 4: Simplify right side
    559,661.27x = 245,569,471,322.84
  5. Step 5: Solve for x
    x = 245,569,471,322.84/559,661.27
  6. Step 6: Final answer
    x = 438,782.32

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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.