Home / 678,156.30-1,017,404.55-299,149.20

Finding the Fourth Proportional to 678,156.30, 1,017,404.55 and 299,149.20

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Solution

The fourth proportional to 678,156.30, 1,017,404.55 and 299,149.20 is: 448,798.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,156.30 : 1,017,404.55 = 299,149.20 : x
  2. Step 2: Convert to fraction form
    678,156.30/1,017,404.55 = 299,149.20/x
  3. Step 3: Cross multiply
    678,156.30x = 1,017,404.55 × 299,149.20
  4. Step 4: Simplify right side
    678,156.30x = 304,355,757,208.86
  5. Step 5: Solve for x
    x = 304,355,757,208.86/678,156.30
  6. Step 6: Final answer
    x = 448,798.83

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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.