Home / 729,979.86-1,007,351.70-407,680.50

Finding the Fourth Proportional to 729,979.86, 1,007,351.70 and 407,680.50

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Solution

The fourth proportional to 729,979.86, 1,007,351.70 and 407,680.50 is: 562,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,979.86 : 1,007,351.70 = 407,680.50 : x
  2. Step 2: Convert to fraction form
    729,979.86/1,007,351.70 = 407,680.50/x
  3. Step 3: Cross multiply
    729,979.86x = 1,007,351.70 × 407,680.50
  4. Step 4: Simplify right side
    729,979.86x = 410,677,644,731.85
  5. Step 5: Solve for x
    x = 410,677,644,731.85/729,979.86
  6. Step 6: Final answer
    x = 562,587.64

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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.