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Finding the Fourth Proportional to 682,756.47, 942,203.34 and 380,950.47

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Solution

The fourth proportional to 682,756.47, 942,203.34 and 380,950.47 is: 525,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,756.47 : 942,203.34 = 380,950.47 : x
  2. Step 2: Convert to fraction form
    682,756.47/942,203.34 = 380,950.47/x
  3. Step 3: Cross multiply
    682,756.47x = 942,203.34 × 380,950.47
  4. Step 4: Simplify right side
    682,756.47x = 358,932,805,208.57
  5. Step 5: Solve for x
    x = 358,932,805,208.57/682,756.47
  6. Step 6: Final answer
    x = 525,711.32

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Double scale
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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.