Home / 688,645.56-950,327.28-378,555.36

Finding the Fourth Proportional to 688,645.56, 950,327.28 and 378,555.36

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Solution

The fourth proportional to 688,645.56, 950,327.28 and 378,555.36 is: 522,404.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,645.56 : 950,327.28 = 378,555.36 : x
  2. Step 2: Convert to fraction form
    688,645.56/950,327.28 = 378,555.36/x
  3. Step 3: Cross multiply
    688,645.56x = 950,327.28 × 378,555.36
  4. Step 4: Simplify right side
    688,645.56x = 359,751,485,598.22
  5. Step 5: Solve for x
    x = 359,751,485,598.22/688,645.56
  6. Step 6: Final answer
    x = 522,404.42

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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.