Home / 716,946.39-989,414.19-394,686.45

Finding the Fourth Proportional to 716,946.39, 989,414.19 and 394,686.45

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Solution

The fourth proportional to 716,946.39, 989,414.19 and 394,686.45 is: 544,682.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,946.39 : 989,414.19 = 394,686.45 : x
  2. Step 2: Convert to fraction form
    716,946.39/989,414.19 = 394,686.45/x
  3. Step 3: Cross multiply
    716,946.39x = 989,414.19 × 394,686.45
  4. Step 4: Simplify right side
    716,946.39x = 390,508,374,230.73
  5. Step 5: Solve for x
    x = 390,508,374,230.73/716,946.39
  6. Step 6: Final answer
    x = 544,682.81

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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.