Home / 699,340.59-965,088.58-393,417.18

Finding the Fourth Proportional to 699,340.59, 965,088.58 and 393,417.18

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Solution

The fourth proportional to 699,340.59, 965,088.58 and 393,417.18 is: 542,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,340.59 : 965,088.58 = 393,417.18 : x
  2. Step 2: Convert to fraction form
    699,340.59/965,088.58 = 393,417.18/x
  3. Step 3: Cross multiply
    699,340.59x = 965,088.58 × 393,417.18
  4. Step 4: Simplify right side
    699,340.59x = 379,682,427,593.80
  5. Step 5: Solve for x
    x = 379,682,427,593.80/699,340.59
  6. Step 6: Final answer
    x = 542,914.90

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Double scale
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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.