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Finding the Fourth Proportional to 562,260.81, 775,112.83 and 400,835.60

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Solution

The fourth proportional to 562,260.81, 775,112.83 and 400,835.60 is: 552,577.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,260.81 : 775,112.83 = 400,835.60 : x
  2. Step 2: Convert to fraction form
    562,260.81/775,112.83 = 400,835.60/x
  3. Step 3: Cross multiply
    562,260.81x = 775,112.83 × 400,835.60
  4. Step 4: Simplify right side
    562,260.81x = 310,692,818,669.78
  5. Step 5: Solve for x
    x = 310,692,818,669.78/562,260.81
  6. Step 6: Final answer
    x = 552,577.76

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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.