Home / 678,632.94-1,017,998.40-205,355.58

Finding the Fourth Proportional to 678,632.94, 1,017,998.40 and 205,355.58

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Solution

The fourth proportional to 678,632.94, 1,017,998.40 and 205,355.58 is: 308,048.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,632.94 : 1,017,998.40 = 205,355.58 : x
  2. Step 2: Convert to fraction form
    678,632.94/1,017,998.40 = 205,355.58/x
  3. Step 3: Cross multiply
    678,632.94x = 1,017,998.40 × 205,355.58
  4. Step 4: Simplify right side
    678,632.94x = 209,051,651,871.07
  5. Step 5: Solve for x
    x = 209,051,651,871.07/678,632.94
  6. Step 6: Final answer
    x = 308,048.19

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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.