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Finding the Fourth Proportional to 622,705.92, 859,176 and 380,900.16

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Solution

The fourth proportional to 622,705.92, 859,176 and 380,900.16 is: 525,545.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,705.92 : 859,176 = 380,900.16 : x
  2. Step 2: Convert to fraction form
    622,705.92/859,176 = 380,900.16/x
  3. Step 3: Cross multiply
    622,705.92x = 859,176 × 380,900.16
  4. Step 4: Simplify right side
    622,705.92x = 327,260,275,868.16
  5. Step 5: Solve for x
    x = 327,260,275,868.16/622,705.92
  6. Step 6: Final answer
    x = 525,545.47

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1.5x scale

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.