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Finding the Fourth Proportional to 559,787.25, 772,263.13 and 355,728.91

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Solution

The fourth proportional to 559,787.25, 772,263.13 and 355,728.91 is: 490,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,787.25 : 772,263.13 = 355,728.91 : x
  2. Step 2: Convert to fraction form
    559,787.25/772,263.13 = 355,728.91/x
  3. Step 3: Cross multiply
    559,787.25x = 772,263.13 × 355,728.91
  4. Step 4: Simplify right side
    559,787.25x = 274,716,321,468.09
  5. Step 5: Solve for x
    x = 274,716,321,468.09/559,787.25
  6. Step 6: Final answer
    x = 490,751.30

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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.