Home / 821,745.90-1,232,899.08-442,705.53

Finding the Fourth Proportional to 821,745.90, 1,232,899.08 and 442,705.53

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Solution

The fourth proportional to 821,745.90, 1,232,899.08 and 442,705.53 is: 664,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,745.90 : 1,232,899.08 = 442,705.53 : x
  2. Step 2: Convert to fraction form
    821,745.90/1,232,899.08 = 442,705.53/x
  3. Step 3: Cross multiply
    821,745.90x = 1,232,899.08 × 442,705.53
  4. Step 4: Simplify right side
    821,745.90x = 545,811,240,647.91
  5. Step 5: Solve for x
    x = 545,811,240,647.91/821,745.90
  6. Step 6: Final answer
    x = 664,209.27

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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.