Home / 687,302.34-1,030,755.87-287,933.46

Finding the Fourth Proportional to 687,302.34, 1,030,755.87 and 287,933.46

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Solution

The fourth proportional to 687,302.34, 1,030,755.87 and 287,933.46 is: 431,817.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,302.34 : 1,030,755.87 = 287,933.46 : x
  2. Step 2: Convert to fraction form
    687,302.34/1,030,755.87 = 287,933.46/x
  3. Step 3: Cross multiply
    687,302.34x = 1,030,755.87 × 287,933.46
  4. Step 4: Simplify right side
    687,302.34x = 296,789,104,064.41
  5. Step 5: Solve for x
    x = 296,789,104,064.41/687,302.34
  6. Step 6: Final answer
    x = 431,817.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.