Home / 862,124.45-1,189,731.06-499,758.20

Finding the Fourth Proportional to 862,124.45, 1,189,731.06 and 499,758.20

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Solution

The fourth proportional to 862,124.45, 1,189,731.06 and 499,758.20 is: 689,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,124.45 : 1,189,731.06 = 499,758.20 : x
  2. Step 2: Convert to fraction form
    862,124.45/1,189,731.06 = 499,758.20/x
  3. Step 3: Cross multiply
    862,124.45x = 1,189,731.06 × 499,758.20
  4. Step 4: Simplify right side
    862,124.45x = 594,577,847,081.04
  5. Step 5: Solve for x
    x = 594,577,847,081.04/862,124.45
  6. Step 6: Final answer
    x = 689,665.91

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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.