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Finding the Fourth Proportional to 414,730.80, 620,929.80 and 372,740.40

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Solution

The fourth proportional to 414,730.80, 620,929.80 and 372,740.40 is: 558,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,730.80 : 620,929.80 = 372,740.40 : x
  2. Step 2: Convert to fraction form
    414,730.80/620,929.80 = 372,740.40/x
  3. Step 3: Cross multiply
    414,730.80x = 620,929.80 × 372,740.40
  4. Step 4: Simplify right side
    414,730.80x = 231,445,622,023.92
  5. Step 5: Solve for x
    x = 231,445,622,023.92/414,730.80
  6. Step 6: Final answer
    x = 558,062.29

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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.