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Finding the Fourth Proportional to 722,476.89, 997,050.94 and 400,186.95

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Solution

The fourth proportional to 722,476.89, 997,050.94 and 400,186.95 is: 552,276.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,476.89 : 997,050.94 = 400,186.95 : x
  2. Step 2: Convert to fraction form
    722,476.89/997,050.94 = 400,186.95/x
  3. Step 3: Cross multiply
    722,476.89x = 997,050.94 × 400,186.95
  4. Step 4: Simplify right side
    722,476.89x = 399,006,772,672.30
  5. Step 5: Solve for x
    x = 399,006,772,672.30/722,476.89
  6. Step 6: Final answer
    x = 552,276.17

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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.