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Finding the Fourth Proportional to 690,395.06, 952,516.86 and 403,712.22

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Solution

The fourth proportional to 690,395.06, 952,516.86 and 403,712.22 is: 556,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,395.06 : 952,516.86 = 403,712.22 : x
  2. Step 2: Convert to fraction form
    690,395.06/952,516.86 = 403,712.22/x
  3. Step 3: Cross multiply
    690,395.06x = 952,516.86 × 403,712.22
  4. Step 4: Simplify right side
    690,395.06x = 384,542,696,138.03
  5. Step 5: Solve for x
    x = 384,542,696,138.03/690,395.06
  6. Step 6: Final answer
    x = 556,989.35

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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.