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Finding the Fourth Proportional to 406,620.77, 610,302.80 and 207,078.89

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Solution

The fourth proportional to 406,620.77, 610,302.80 and 207,078.89 is: 310,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,620.77 : 610,302.80 = 207,078.89 : x
  2. Step 2: Convert to fraction form
    406,620.77/610,302.80 = 207,078.89/x
  3. Step 3: Cross multiply
    406,620.77x = 610,302.80 × 207,078.89
  4. Step 4: Simplify right side
    406,620.77x = 126,380,823,854.08
  5. Step 5: Solve for x
    x = 126,380,823,854.08/406,620.77
  6. Step 6: Final answer
    x = 310,807.60

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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.