Home / 678,390.08-1,017,732.72-205,063.13

Finding the Fourth Proportional to 678,390.08, 1,017,732.72 and 205,063.13

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Solution

The fourth proportional to 678,390.08, 1,017,732.72 and 205,063.13 is: 307,639.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,390.08 : 1,017,732.72 = 205,063.13 : x
  2. Step 2: Convert to fraction form
    678,390.08/1,017,732.72 = 205,063.13/x
  3. Step 3: Cross multiply
    678,390.08x = 1,017,732.72 × 205,063.13
  4. Step 4: Simplify right side
    678,390.08x = 208,699,451,977.95
  5. Step 5: Solve for x
    x = 208,699,451,977.95/678,390.08
  6. Step 6: Final answer
    x = 307,639.31

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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.