Home / 749,145.22-1,034,101.53-491,038.80

Finding the Fourth Proportional to 749,145.22, 1,034,101.53 and 491,038.80

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Solution

The fourth proportional to 749,145.22, 1,034,101.53 and 491,038.80 is: 677,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,145.22 : 1,034,101.53 = 491,038.80 : x
  2. Step 2: Convert to fraction form
    749,145.22/1,034,101.53 = 491,038.80/x
  3. Step 3: Cross multiply
    749,145.22x = 1,034,101.53 × 491,038.80
  4. Step 4: Simplify right side
    749,145.22x = 507,783,969,198.86
  5. Step 5: Solve for x
    x = 507,783,969,198.86/749,145.22
  6. Step 6: Final answer
    x = 677,817.81

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Double scale
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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.