Home / 986,011.50-1,479,238.77-312,133.20

Finding the Fourth Proportional to 986,011.50, 1,479,238.77 and 312,133.20

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Solution

The fourth proportional to 986,011.50, 1,479,238.77 and 312,133.20 is: 468,269.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,011.50 : 1,479,238.77 = 312,133.20 : x
  2. Step 2: Convert to fraction form
    986,011.50/1,479,238.77 = 312,133.20/x
  3. Step 3: Cross multiply
    986,011.50x = 1,479,238.77 × 312,133.20
  4. Step 4: Simplify right side
    986,011.50x = 461,719,530,844.16
  5. Step 5: Solve for x
    x = 461,719,530,844.16/986,011.50
  6. Step 6: Final answer
    x = 468,269.92

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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.