Home / 678,416.30-1,017,772.05-205,089.29

Finding the Fourth Proportional to 678,416.30, 1,017,772.05 and 205,089.29

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Solution

The fourth proportional to 678,416.30, 1,017,772.05 and 205,089.29 is: 307,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,416.30 : 1,017,772.05 = 205,089.29 : x
  2. Step 2: Convert to fraction form
    678,416.30/1,017,772.05 = 205,089.29/x
  3. Step 3: Cross multiply
    678,416.30x = 1,017,772.05 × 205,089.29
  4. Step 4: Simplify right side
    678,416.30x = 208,734,147,116.35
  5. Step 5: Solve for x
    x = 208,734,147,116.35/678,416.30
  6. Step 6: Final answer
    x = 307,678.56

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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.