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Finding the Fourth Proportional to 785,798.56, 1,178,172.88 and 245,872

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Solution

The fourth proportional to 785,798.56, 1,178,172.88 and 245,872 is: 368,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,798.56 : 1,178,172.88 = 245,872 : x
  2. Step 2: Convert to fraction form
    785,798.56/1,178,172.88 = 245,872/x
  3. Step 3: Cross multiply
    785,798.56x = 1,178,172.88 × 245,872
  4. Step 4: Simplify right side
    785,798.56x = 289,679,722,351.36
  5. Step 5: Solve for x
    x = 289,679,722,351.36/785,798.56
  6. Step 6: Final answer
    x = 368,643.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.