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Finding the Fourth Proportional to 547,691.18, 820,802.44 and 426,258.39

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Solution

The fourth proportional to 547,691.18, 820,802.44 and 426,258.39 is: 638,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,691.18 : 820,802.44 = 426,258.39 : x
  2. Step 2: Convert to fraction form
    547,691.18/820,802.44 = 426,258.39/x
  3. Step 3: Cross multiply
    547,691.18x = 820,802.44 × 426,258.39
  4. Step 4: Simplify right side
    547,691.18x = 349,873,925,516.83
  5. Step 5: Solve for x
    x = 349,873,925,516.83/547,691.18
  6. Step 6: Final answer
    x = 638,816.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.