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Finding the Fourth Proportional to 722,940.19, 997,657.46 and 400,698.72

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Solution

The fourth proportional to 722,940.19, 997,657.46 and 400,698.72 is: 552,964.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,940.19 : 997,657.46 = 400,698.72 : x
  2. Step 2: Convert to fraction form
    722,940.19/997,657.46 = 400,698.72/x
  3. Step 3: Cross multiply
    722,940.19x = 997,657.46 × 400,698.72
  4. Step 4: Simplify right side
    722,940.19x = 399,760,069,525.47
  5. Step 5: Solve for x
    x = 399,760,069,525.47/722,940.19
  6. Step 6: Final answer
    x = 552,964.24

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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.