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Finding the Fourth Proportional to 722,866.68, 997,561.98 and 400,582.26

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Solution

The fourth proportional to 722,866.68, 997,561.98 and 400,582.26 is: 552,806.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,866.68 : 997,561.98 = 400,582.26 : x
  2. Step 2: Convert to fraction form
    722,866.68/997,561.98 = 400,582.26/x
  3. Step 3: Cross multiply
    722,866.68x = 997,561.98 × 400,582.26
  4. Step 4: Simplify right side
    722,866.68x = 399,605,632,438.48
  5. Step 5: Solve for x
    x = 399,605,632,438.48/722,866.68
  6. Step 6: Final answer
    x = 552,806.82

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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.