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Finding the Fourth Proportional to 622,487.08, 859,020.51 and 380,751.90

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Solution

The fourth proportional to 622,487.08, 859,020.51 and 380,751.90 is: 525,430.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,487.08 : 859,020.51 = 380,751.90 : x
  2. Step 2: Convert to fraction form
    622,487.08/859,020.51 = 380,751.90/x
  3. Step 3: Cross multiply
    622,487.08x = 859,020.51 × 380,751.90
  4. Step 4: Simplify right side
    622,487.08x = 327,073,687,386.23
  5. Step 5: Solve for x
    x = 327,073,687,386.23/622,487.08
  6. Step 6: Final answer
    x = 525,430.48

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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.