Home / 723,561.89-1,085,993.35-386,890.32

Finding the Fourth Proportional to 723,561.89, 1,085,993.35 and 386,890.32

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Solution

The fourth proportional to 723,561.89, 1,085,993.35 and 386,890.32 is: 580,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,561.89 : 1,085,993.35 = 386,890.32 : x
  2. Step 2: Convert to fraction form
    723,561.89/1,085,993.35 = 386,890.32/x
  3. Step 3: Cross multiply
    723,561.89x = 1,085,993.35 × 386,890.32
  4. Step 4: Simplify right side
    723,561.89x = 420,160,318,892.75
  5. Step 5: Solve for x
    x = 420,160,318,892.75/723,561.89
  6. Step 6: Final answer
    x = 580,683.32

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Double scale
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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.