Home / 699,038.90-964,664.48-393,115.19

Finding the Fourth Proportional to 699,038.90, 964,664.48 and 393,115.19

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Solution

The fourth proportional to 699,038.90, 964,664.48 and 393,115.19 is: 542,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,038.90 : 964,664.48 = 393,115.19 : x
  2. Step 2: Convert to fraction form
    699,038.90/964,664.48 = 393,115.19/x
  3. Step 3: Cross multiply
    699,038.90x = 964,664.48 × 393,115.19
  4. Step 4: Simplify right side
    699,038.90x = 379,224,253,552.55
  5. Step 5: Solve for x
    x = 379,224,253,552.55/699,038.90
  6. Step 6: Final answer
    x = 542,493.78

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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.