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Finding the Fourth Proportional to 692,913.50, 956,220.69 and 391,126.94

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Solution

The fourth proportional to 692,913.50, 956,220.69 and 391,126.94 is: 539,755.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,913.50 : 956,220.69 = 391,126.94 : x
  2. Step 2: Convert to fraction form
    692,913.50/956,220.69 = 391,126.94/x
  3. Step 3: Cross multiply
    692,913.50x = 956,220.69 × 391,126.94
  4. Step 4: Simplify right side
    692,913.50x = 374,003,672,444.39
  5. Step 5: Solve for x
    x = 374,003,672,444.39/692,913.50
  6. Step 6: Final answer
    x = 539,755.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.