Home / 742,039.28-1,022,877.96-455,027.12

Finding the Fourth Proportional to 742,039.28, 1,022,877.96 and 455,027.12

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Solution

The fourth proportional to 742,039.28, 1,022,877.96 and 455,027.12 is: 627,240.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,039.28 : 1,022,877.96 = 455,027.12 : x
  2. Step 2: Convert to fraction form
    742,039.28/1,022,877.96 = 455,027.12/x
  3. Step 3: Cross multiply
    742,039.28x = 1,022,877.96 × 455,027.12
  4. Step 4: Simplify right side
    742,039.28x = 465,437,212,250.28
  5. Step 5: Solve for x
    x = 465,437,212,250.28/742,039.28
  6. Step 6: Final answer
    x = 627,240.67

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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.