Home / 749,145.85-1,034,102.40-491,039.42

Finding the Fourth Proportional to 749,145.85, 1,034,102.40 and 491,039.42

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Solution

The fourth proportional to 749,145.85, 1,034,102.40 and 491,039.42 is: 677,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,145.85 : 1,034,102.40 = 491,039.42 : x
  2. Step 2: Convert to fraction form
    749,145.85/1,034,102.40 = 491,039.42/x
  3. Step 3: Cross multiply
    749,145.85x = 1,034,102.40 × 491,039.42
  4. Step 4: Simplify right side
    749,145.85x = 507,785,040,261.41
  5. Step 5: Solve for x
    x = 507,785,040,261.41/749,145.85
  6. Step 6: Final answer
    x = 677,818.67

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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.