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Finding the Fourth Proportional to 716,684.92, 989,025.35 and 394,395.02

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Solution

The fourth proportional to 716,684.92, 989,025.35 and 394,395.02 is: 544,265.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,684.92 : 989,025.35 = 394,395.02 : x
  2. Step 2: Convert to fraction form
    716,684.92/989,025.35 = 394,395.02/x
  3. Step 3: Cross multiply
    716,684.92x = 989,025.35 × 394,395.02
  4. Step 4: Simplify right side
    716,684.92x = 390,066,672,693.76
  5. Step 5: Solve for x
    x = 390,066,672,693.76/716,684.92
  6. Step 6: Final answer
    x = 544,265.22

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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.