Home / 726,341.10-1,089,511.65-442,905.90

Finding the Fourth Proportional to 726,341.10, 1,089,511.65 and 442,905.90

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Solution

The fourth proportional to 726,341.10, 1,089,511.65 and 442,905.90 is: 664,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,341.10 : 1,089,511.65 = 442,905.90 : x
  2. Step 2: Convert to fraction form
    726,341.10/1,089,511.65 = 442,905.90/x
  3. Step 3: Cross multiply
    726,341.10x = 1,089,511.65 × 442,905.90
  4. Step 4: Simplify right side
    726,341.10x = 482,551,137,903.74
  5. Step 5: Solve for x
    x = 482,551,137,903.74/726,341.10
  6. Step 6: Final answer
    x = 664,358.85

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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.