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Finding the Fourth Proportional to 570,388.88, 856,424.39 and 318,162.17

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Solution

The fourth proportional to 570,388.88, 856,424.39 and 318,162.17 is: 477,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,388.88 : 856,424.39 = 318,162.17 : x
  2. Step 2: Convert to fraction form
    570,388.88/856,424.39 = 318,162.17/x
  3. Step 3: Cross multiply
    570,388.88x = 856,424.39 × 318,162.17
  4. Step 4: Simplify right side
    570,388.88x = 272,481,836,490.39
  5. Step 5: Solve for x
    x = 272,481,836,490.39/570,388.88
  6. Step 6: Final answer
    x = 477,712.40

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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.