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Finding the Fourth Proportional to 678,125.82, 935,825.50 and 372,230.82

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Solution

The fourth proportional to 678,125.82, 935,825.50 and 372,230.82 is: 513,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,125.82 : 935,825.50 = 372,230.82 : x
  2. Step 2: Convert to fraction form
    678,125.82/935,825.50 = 372,230.82/x
  3. Step 3: Cross multiply
    678,125.82x = 935,825.50 × 372,230.82
  4. Step 4: Simplify right side
    678,125.82x = 348,343,091,075.19
  5. Step 5: Solve for x
    x = 348,343,091,075.19/678,125.82
  6. Step 6: Final answer
    x = 513,685.04

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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.