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Finding the Fourth Proportional to 570,887.34, 787,790.66 and 312,712.68

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Solution

The fourth proportional to 570,887.34, 787,790.66 and 312,712.68 is: 431,524.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,887.34 : 787,790.66 = 312,712.68 : x
  2. Step 2: Convert to fraction form
    570,887.34/787,790.66 = 312,712.68/x
  3. Step 3: Cross multiply
    570,887.34x = 787,790.66 × 312,712.68
  4. Step 4: Simplify right side
    570,887.34x = 246,352,125,070.25
  5. Step 5: Solve for x
    x = 246,352,125,070.25/570,887.34
  6. Step 6: Final answer
    x = 431,524.94

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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.