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Finding the Fourth Proportional to 722,897.03, 997,603.76 and 400,612.43

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Solution

The fourth proportional to 722,897.03, 997,603.76 and 400,612.43 is: 552,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,897.03 : 997,603.76 = 400,612.43 : x
  2. Step 2: Convert to fraction form
    722,897.03/997,603.76 = 400,612.43/x
  3. Step 3: Cross multiply
    722,897.03x = 997,603.76 × 400,612.43
  4. Step 4: Simplify right side
    722,897.03x = 399,652,462,484.25
  5. Step 5: Solve for x
    x = 399,652,462,484.25/722,897.03
  6. Step 6: Final answer
    x = 552,848.40

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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.