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Finding the Fourth Proportional to 678,095.52, 935,815.64 and 376,289.52

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Solution

The fourth proportional to 678,095.52, 935,815.64 and 376,289.52 is: 519,303.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,095.52 : 935,815.64 = 376,289.52 : x
  2. Step 2: Convert to fraction form
    678,095.52/935,815.64 = 376,289.52/x
  3. Step 3: Cross multiply
    678,095.52x = 935,815.64 × 376,289.52
  4. Step 4: Simplify right side
    678,095.52x = 352,137,617,984.09
  5. Step 5: Solve for x
    x = 352,137,617,984.09/678,095.52
  6. Step 6: Final answer
    x = 519,303.86

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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.