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Finding the Fourth Proportional to 562,791.36, 776,654.28 and 308,140.32

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Solution

The fourth proportional to 562,791.36, 776,654.28 and 308,140.32 is: 425,234.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,791.36 : 776,654.28 = 308,140.32 : x
  2. Step 2: Convert to fraction form
    562,791.36/776,654.28 = 308,140.32/x
  3. Step 3: Cross multiply
    562,791.36x = 776,654.28 × 308,140.32
  4. Step 4: Simplify right side
    562,791.36x = 239,318,498,368.57
  5. Step 5: Solve for x
    x = 239,318,498,368.57/562,791.36
  6. Step 6: Final answer
    x = 425,234.85

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1.5x scale

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.