Home / 862,145.37-1,189,760.54-480,172.05

Finding the Fourth Proportional to 862,145.37, 1,189,760.54 and 480,172.05

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Solution

The fourth proportional to 862,145.37, 1,189,760.54 and 480,172.05 is: 662,637.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,145.37 : 1,189,760.54 = 480,172.05 : x
  2. Step 2: Convert to fraction form
    862,145.37/1,189,760.54 = 480,172.05/x
  3. Step 3: Cross multiply
    862,145.37x = 1,189,760.54 × 480,172.05
  4. Step 4: Simplify right side
    862,145.37x = 571,289,755,100.05
  5. Step 5: Solve for x
    x = 571,289,755,100.05/862,145.37
  6. Step 6: Final answer
    x = 662,637.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.