Home / 717,043.40-989,504.32-394,741.16

Finding the Fourth Proportional to 717,043.40, 989,504.32 and 394,741.16

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Solution

The fourth proportional to 717,043.40, 989,504.32 and 394,741.16 is: 544,734.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,043.40 : 989,504.32 = 394,741.16 : x
  2. Step 2: Convert to fraction form
    717,043.40/989,504.32 = 394,741.16/x
  3. Step 3: Cross multiply
    717,043.40x = 989,504.32 × 394,741.16
  4. Step 4: Simplify right side
    717,043.40x = 390,598,083,101.81
  5. Step 5: Solve for x
    x = 390,598,083,101.81/717,043.40
  6. Step 6: Final answer
    x = 544,734.23

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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.