Home / 747,109.76-1,120,664.64-412,278.56

Finding the Fourth Proportional to 747,109.76, 1,120,664.64 and 412,278.56

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Solution

The fourth proportional to 747,109.76, 1,120,664.64 and 412,278.56 is: 618,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,109.76 : 1,120,664.64 = 412,278.56 : x
  2. Step 2: Convert to fraction form
    747,109.76/1,120,664.64 = 412,278.56/x
  3. Step 3: Cross multiply
    747,109.76x = 1,120,664.64 × 412,278.56
  4. Step 4: Simplify right side
    747,109.76x = 462,026,004,022.12
  5. Step 5: Solve for x
    x = 462,026,004,022.12/747,109.76
  6. Step 6: Final answer
    x = 618,417.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.