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Finding the Fourth Proportional to 620,513.03, 929,908.40 and 282,728.13

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Solution

The fourth proportional to 620,513.03, 929,908.40 and 282,728.13 is: 423,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,513.03 : 929,908.40 = 282,728.13 : x
  2. Step 2: Convert to fraction form
    620,513.03/929,908.40 = 282,728.13/x
  3. Step 3: Cross multiply
    620,513.03x = 929,908.40 × 282,728.13
  4. Step 4: Simplify right side
    620,513.03x = 262,911,261,589.65
  5. Step 5: Solve for x
    x = 262,911,261,589.65/620,513.03
  6. Step 6: Final answer
    x = 423,699.83

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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.