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Finding the Fourth Proportional to 617,286.61, 851,666.52 and 402,348.25

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Solution

The fourth proportional to 617,286.61, 851,666.52 and 402,348.25 is: 555,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,286.61 : 851,666.52 = 402,348.25 : x
  2. Step 2: Convert to fraction form
    617,286.61/851,666.52 = 402,348.25/x
  3. Step 3: Cross multiply
    617,286.61x = 851,666.52 × 402,348.25
  4. Step 4: Simplify right side
    617,286.61x = 342,666,533,905.59
  5. Step 5: Solve for x
    x = 342,666,533,905.59/617,286.61
  6. Step 6: Final answer
    x = 555,117.39

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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.