Home / 699,339.59-965,087.21-393,416.18

Finding the Fourth Proportional to 699,339.59, 965,087.21 and 393,416.18

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Solution

The fourth proportional to 699,339.59, 965,087.21 and 393,416.18 is: 542,913.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,339.59 : 965,087.21 = 393,416.18 : x
  2. Step 2: Convert to fraction form
    699,339.59/965,087.21 = 393,416.18/x
  3. Step 3: Cross multiply
    699,339.59x = 965,087.21 × 393,416.18
  4. Step 4: Simplify right side
    699,339.59x = 379,680,921,557.98
  5. Step 5: Solve for x
    x = 379,680,921,557.98/699,339.59
  6. Step 6: Final answer
    x = 542,913.52

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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.