Home / 623,664.59-860,790.66-394,076.10

Finding the Fourth Proportional to 623,664.59, 860,790.66 and 394,076.10

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Solution

The fourth proportional to 623,664.59, 860,790.66 and 394,076.10 is: 543,909.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,664.59 : 860,790.66 = 394,076.10 : x
  2. Step 2: Convert to fraction form
    623,664.59/860,790.66 = 394,076.10/x
  3. Step 3: Cross multiply
    623,664.59x = 860,790.66 × 394,076.10
  4. Step 4: Simplify right side
    623,664.59x = 339,217,026,209.23
  5. Step 5: Solve for x
    x = 339,217,026,209.23/623,664.59
  6. Step 6: Final answer
    x = 543,909.39

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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.