Home / 725,945.20-1,089,139.32-371,208.40

Finding the Fourth Proportional to 725,945.20, 1,089,139.32 and 371,208.40

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Solution

The fourth proportional to 725,945.20, 1,089,139.32 and 371,208.40 is: 556,925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,945.20 : 1,089,139.32 = 371,208.40 : x
  2. Step 2: Convert to fraction form
    725,945.20/1,089,139.32 = 371,208.40/x
  3. Step 3: Cross multiply
    725,945.20x = 1,089,139.32 × 371,208.40
  4. Step 4: Simplify right side
    725,945.20x = 404,297,664,354.29
  5. Step 5: Solve for x
    x = 404,297,664,354.29/725,945.20
  6. Step 6: Final answer
    x = 556,925.87

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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.