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Finding the Fourth Proportional to 722,472.48, 997,020 and 400,187.52

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Solution

The fourth proportional to 722,472.48, 997,020 and 400,187.52 is: 552,263.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,472.48 : 997,020 = 400,187.52 : x
  2. Step 2: Convert to fraction form
    722,472.48/997,020 = 400,187.52/x
  3. Step 3: Cross multiply
    722,472.48x = 997,020 × 400,187.52
  4. Step 4: Simplify right side
    722,472.48x = 398,994,961,190.40
  5. Step 5: Solve for x
    x = 398,994,961,190.40/722,472.48
  6. Step 6: Final answer
    x = 552,263.20

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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.