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Finding the Fourth Proportional to 674,305.87, 930,560.36 and 402,531.50

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Solution

The fourth proportional to 674,305.87, 930,560.36 and 402,531.50 is: 555,504.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,305.87 : 930,560.36 = 402,531.50 : x
  2. Step 2: Convert to fraction form
    674,305.87/930,560.36 = 402,531.50/x
  3. Step 3: Cross multiply
    674,305.87x = 930,560.36 × 402,531.50
  4. Step 4: Simplify right side
    674,305.87x = 374,579,857,551.34
  5. Step 5: Solve for x
    x = 374,579,857,551.34/674,305.87
  6. Step 6: Final answer
    x = 555,504.37

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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.