Home / 747,505.81-1,121,258.72-427,433.16

Finding the Fourth Proportional to 747,505.81, 1,121,258.72 and 427,433.16

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Solution

The fourth proportional to 747,505.81, 1,121,258.72 and 427,433.16 is: 641,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,505.81 : 1,121,258.72 = 427,433.16 : x
  2. Step 2: Convert to fraction form
    747,505.81/1,121,258.72 = 427,433.16/x
  3. Step 3: Cross multiply
    747,505.81x = 1,121,258.72 × 427,433.16
  4. Step 4: Simplify right side
    747,505.81x = 479,263,157,867.16
  5. Step 5: Solve for x
    x = 479,263,157,867.16/747,505.81
  6. Step 6: Final answer
    x = 641,149.74

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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.