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Finding the Fourth Proportional to 515,458.08, 709,715.52 and 468,218.88

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Solution

The fourth proportional to 515,458.08, 709,715.52 and 468,218.88 is: 644,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,458.08 : 709,715.52 = 468,218.88 : x
  2. Step 2: Convert to fraction form
    515,458.08/709,715.52 = 468,218.88/x
  3. Step 3: Cross multiply
    515,458.08x = 709,715.52 × 468,218.88
  4. Step 4: Simplify right side
    515,458.08x = 332,302,205,893.02
  5. Step 5: Solve for x
    x = 332,302,205,893.02/515,458.08
  6. Step 6: Final answer
    x = 644,673.58

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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.