Home / 678,068.01-1,017,085.61-172,630.09

Finding the Fourth Proportional to 678,068.01, 1,017,085.61 and 172,630.09

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Solution

The fourth proportional to 678,068.01, 1,017,085.61 and 172,630.09 is: 258,940.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,068.01 : 1,017,085.61 = 172,630.09 : x
  2. Step 2: Convert to fraction form
    678,068.01/1,017,085.61 = 172,630.09/x
  3. Step 3: Cross multiply
    678,068.01x = 1,017,085.61 × 172,630.09
  4. Step 4: Simplify right side
    678,068.01x = 175,579,576,373.83
  5. Step 5: Solve for x
    x = 175,579,576,373.83/678,068.01
  6. Step 6: Final answer
    x = 258,940.95

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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.