Home / 678,154.80-1,017,402.30-299,147.70

Finding the Fourth Proportional to 678,154.80, 1,017,402.30 and 299,147.70

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Solution

The fourth proportional to 678,154.80, 1,017,402.30 and 299,147.70 is: 448,796.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,154.80 : 1,017,402.30 = 299,147.70 : x
  2. Step 2: Convert to fraction form
    678,154.80/1,017,402.30 = 299,147.70/x
  3. Step 3: Cross multiply
    678,154.80x = 1,017,402.30 × 299,147.70
  4. Step 4: Simplify right side
    678,154.80x = 304,353,558,019.71
  5. Step 5: Solve for x
    x = 304,353,558,019.71/678,154.80
  6. Step 6: Final answer
    x = 448,796.58

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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.