Home / 678,154.30-1,017,401.55-299,147.20

Finding the Fourth Proportional to 678,154.30, 1,017,401.55 and 299,147.20

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Solution

The fourth proportional to 678,154.30, 1,017,401.55 and 299,147.20 is: 448,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,154.30 : 1,017,401.55 = 299,147.20 : x
  2. Step 2: Convert to fraction form
    678,154.30/1,017,401.55 = 299,147.20/x
  3. Step 3: Cross multiply
    678,154.30x = 1,017,401.55 × 299,147.20
  4. Step 4: Simplify right side
    678,154.30x = 304,352,824,958.16
  5. Step 5: Solve for x
    x = 304,352,824,958.16/678,154.30
  6. Step 6: Final answer
    x = 448,795.83

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1.5x scale

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.