Home / 1,240,739.80-1,861,109.70-492,785.80

Finding the Fourth Proportional to 1,240,739.80, 1,861,109.70 and 492,785.80

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Solution

The fourth proportional to 1,240,739.80, 1,861,109.70 and 492,785.80 is: 739,178.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,739.80 : 1,861,109.70 = 492,785.80 : x
  2. Step 2: Convert to fraction form
    1,240,739.80/1,861,109.70 = 492,785.80/x
  3. Step 3: Cross multiply
    1,240,739.80x = 1,861,109.70 × 492,785.80
  4. Step 4: Simplify right side
    1,240,739.80x = 917,128,432,402.26
  5. Step 5: Solve for x
    x = 917,128,432,402.26/1,240,739.80
  6. Step 6: Final answer
    x = 739,178.70

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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.