Home / 825,688.80-1,238,533.20-720,712.80

Finding the Fourth Proportional to 825,688.80, 1,238,533.20 and 720,712.80

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Solution

The fourth proportional to 825,688.80, 1,238,533.20 and 720,712.80 is: 1,081,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,688.80 : 1,238,533.20 = 720,712.80 : x
  2. Step 2: Convert to fraction form
    825,688.80/1,238,533.20 = 720,712.80/x
  3. Step 3: Cross multiply
    825,688.80x = 1,238,533.20 × 720,712.80
  4. Step 4: Simplify right side
    825,688.80x = 892,626,730,464.96
  5. Step 5: Solve for x
    x = 892,626,730,464.96/825,688.80
  6. Step 6: Final answer
    x = 1,081,069.20

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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.