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Finding the Fourth Proportional to 570,921.05, 787,874.05 and 322,564.11

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Solution

The fourth proportional to 570,921.05, 787,874.05 and 322,564.11 is: 445,140.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,921.05 : 787,874.05 = 322,564.11 : x
  2. Step 2: Convert to fraction form
    570,921.05/787,874.05 = 322,564.11/x
  3. Step 3: Cross multiply
    570,921.05x = 787,874.05 × 322,564.11
  4. Step 4: Simplify right side
    570,921.05x = 254,139,891,730.35
  5. Step 5: Solve for x
    x = 254,139,891,730.35/570,921.05
  6. Step 6: Final answer
    x = 445,140.17

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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.