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Finding the Fourth Proportional to 682,783.80, 942,241.65 and 380,977.80

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Solution

The fourth proportional to 682,783.80, 942,241.65 and 380,977.80 is: 525,749.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,783.80 : 942,241.65 = 380,977.80 : x
  2. Step 2: Convert to fraction form
    682,783.80/942,241.65 = 380,977.80/x
  3. Step 3: Cross multiply
    682,783.80x = 942,241.65 × 380,977.80
  4. Step 4: Simplify right side
    682,783.80x = 358,973,155,480.71
  5. Step 5: Solve for x
    x = 358,973,155,480.71/682,783.80
  6. Step 6: Final answer
    x = 525,749.37

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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.