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Finding the Fourth Proportional to 562,620.36, 776,435.82 and 307,971.74

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Solution

The fourth proportional to 562,620.36, 776,435.82 and 307,971.74 is: 425,011.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,620.36 : 776,435.82 = 307,971.74 : x
  2. Step 2: Convert to fraction form
    562,620.36/776,435.82 = 307,971.74/x
  3. Step 3: Cross multiply
    562,620.36x = 776,435.82 × 307,971.74
  4. Step 4: Simplify right side
    562,620.36x = 239,120,290,483.73
  5. Step 5: Solve for x
    x = 239,120,290,483.73/562,620.36
  6. Step 6: Final answer
    x = 425,011.80

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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.