Home / 726,362.10-1,089,543.15-442,926.90

Finding the Fourth Proportional to 726,362.10, 1,089,543.15 and 442,926.90

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Solution

The fourth proportional to 726,362.10, 1,089,543.15 and 442,926.90 is: 664,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,362.10 : 1,089,543.15 = 442,926.90 : x
  2. Step 2: Convert to fraction form
    726,362.10/1,089,543.15 = 442,926.90/x
  3. Step 3: Cross multiply
    726,362.10x = 1,089,543.15 × 442,926.90
  4. Step 4: Simplify right side
    726,362.10x = 482,587,969,845.74
  5. Step 5: Solve for x
    x = 482,587,969,845.74/726,362.10
  6. Step 6: Final answer
    x = 664,390.35

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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.