Home / 1,279,683.12-1,918,048.46-480,454.92

Finding the Fourth Proportional to 1,279,683.12, 1,918,048.46 and 480,454.92

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Solution

The fourth proportional to 1,279,683.12, 1,918,048.46 and 480,454.92 is: 720,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,683.12 : 1,918,048.46 = 480,454.92 : x
  2. Step 2: Convert to fraction form
    1,279,683.12/1,918,048.46 = 480,454.92/x
  3. Step 3: Cross multiply
    1,279,683.12x = 1,918,048.46 × 480,454.92
  4. Step 4: Simplify right side
    1,279,683.12x = 921,535,819,405.42
  5. Step 5: Solve for x
    x = 921,535,819,405.42/1,279,683.12
  6. Step 6: Final answer
    x = 720,128.14

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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.