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Finding the Fourth Proportional to 722,696.33, 997,328.96 and 400,411.50

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Solution

The fourth proportional to 722,696.33, 997,328.96 and 400,411.50 is: 552,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,696.33 : 997,328.96 = 400,411.50 : x
  2. Step 2: Convert to fraction form
    722,696.33/997,328.96 = 400,411.50/x
  3. Step 3: Cross multiply
    722,696.33x = 997,328.96 × 400,411.50
  4. Step 4: Simplify right side
    722,696.33x = 399,341,982,864.98
  5. Step 5: Solve for x
    x = 399,341,982,864.98/722,696.33
  6. Step 6: Final answer
    x = 552,572.32

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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.