Home / 678,498.60-1,017,592.40-405,022.08

Finding the Fourth Proportional to 678,498.60, 1,017,592.40 and 405,022.08

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Solution

The fourth proportional to 678,498.60, 1,017,592.40 and 405,022.08 is: 607,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,498.60 : 1,017,592.40 = 405,022.08 : x
  2. Step 2: Convert to fraction form
    678,498.60/1,017,592.40 = 405,022.08/x
  3. Step 3: Cross multiply
    678,498.60x = 1,017,592.40 × 405,022.08
  4. Step 4: Simplify right side
    678,498.60x = 412,147,390,440.19
  5. Step 5: Solve for x
    x = 412,147,390,440.19/678,498.60
  6. Step 6: Final answer
    x = 607,440.30

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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.