Home / 726,455.70-1,089,165.15-326,769.30

Finding the Fourth Proportional to 726,455.70, 1,089,165.15 and 326,769.30

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Solution

The fourth proportional to 726,455.70, 1,089,165.15 and 326,769.30 is: 489,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,455.70 : 1,089,165.15 = 326,769.30 : x
  2. Step 2: Convert to fraction form
    726,455.70/1,089,165.15 = 326,769.30/x
  3. Step 3: Cross multiply
    726,455.70x = 1,089,165.15 × 326,769.30
  4. Step 4: Simplify right side
    726,455.70x = 355,905,733,649.90
  5. Step 5: Solve for x
    x = 355,905,733,649.90/726,455.70
  6. Step 6: Final answer
    x = 489,920.77

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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.