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Finding the Fourth Proportional to 678,159.36, 935,841.42 and 372,235.32

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Solution

The fourth proportional to 678,159.36, 935,841.42 and 372,235.32 is: 513,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,159.36 : 935,841.42 = 372,235.32 : x
  2. Step 2: Convert to fraction form
    678,159.36/935,841.42 = 372,235.32/x
  3. Step 3: Cross multiply
    678,159.36x = 935,841.42 × 372,235.32
  4. Step 4: Simplify right side
    678,159.36x = 348,353,230,442.95
  5. Step 5: Solve for x
    x = 348,353,230,442.95/678,159.36
  6. Step 6: Final answer
    x = 513,674.59

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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.