Home / 688,675.05-950,099.45-398,233.17

Finding the Fourth Proportional to 688,675.05, 950,099.45 and 398,233.17

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Solution

The fourth proportional to 688,675.05, 950,099.45 and 398,233.17 is: 549,404.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,675.05 : 950,099.45 = 398,233.17 : x
  2. Step 2: Convert to fraction form
    688,675.05/950,099.45 = 398,233.17/x
  3. Step 3: Cross multiply
    688,675.05x = 950,099.45 × 398,233.17
  4. Step 4: Simplify right side
    688,675.05x = 378,361,113,797.59
  5. Step 5: Solve for x
    x = 378,361,113,797.59/688,675.05
  6. Step 6: Final answer
    x = 549,404.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.