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Finding the Fourth Proportional to 620,515.48, 929,912.07 and 282,730.63

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Solution

The fourth proportional to 620,515.48, 929,912.07 and 282,730.63 is: 423,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,515.48 : 929,912.07 = 282,730.63 : x
  2. Step 2: Convert to fraction form
    620,515.48/929,912.07 = 282,730.63/x
  3. Step 3: Cross multiply
    620,515.48x = 929,912.07 × 282,730.63
  4. Step 4: Simplify right side
    620,515.48x = 262,914,625,395.70
  5. Step 5: Solve for x
    x = 262,914,625,395.70/620,515.48
  6. Step 6: Final answer
    x = 423,703.57

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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.