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Finding the Fourth Proportional to 682,610.50, 942,002.90 and 380,804.50

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Solution

The fourth proportional to 682,610.50, 942,002.90 and 380,804.50 is: 525,510.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,610.50 : 942,002.90 = 380,804.50 : x
  2. Step 2: Convert to fraction form
    682,610.50/942,002.90 = 380,804.50/x
  3. Step 3: Cross multiply
    682,610.50x = 942,002.90 × 380,804.50
  4. Step 4: Simplify right side
    682,610.50x = 358,718,943,333.05
  5. Step 5: Solve for x
    x = 358,718,943,333.05/682,610.50
  6. Step 6: Final answer
    x = 525,510.44

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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.