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Finding the Fourth Proportional to 682,812.81, 942,376.55 and 381,026.25

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Solution

The fourth proportional to 682,812.81, 942,376.55 and 381,026.25 is: 525,869.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,812.81 : 942,376.55 = 381,026.25 : x
  2. Step 2: Convert to fraction form
    682,812.81/942,376.55 = 381,026.25/x
  3. Step 3: Cross multiply
    682,812.81x = 942,376.55 × 381,026.25
  4. Step 4: Simplify right side
    682,812.81x = 359,070,201,029.31
  5. Step 5: Solve for x
    x = 359,070,201,029.31/682,812.81
  6. Step 6: Final answer
    x = 525,869.16

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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.