Home / 981,700.09-1,471,047.23-660,664.19

Finding the Fourth Proportional to 981,700.09, 1,471,047.23 and 660,664.19

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Solution

The fourth proportional to 981,700.09, 1,471,047.23 and 660,664.19 is: 989,984.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,700.09 : 1,471,047.23 = 660,664.19 : x
  2. Step 2: Convert to fraction form
    981,700.09/1,471,047.23 = 660,664.19/x
  3. Step 3: Cross multiply
    981,700.09x = 1,471,047.23 × 660,664.19
  4. Step 4: Simplify right side
    981,700.09x = 971,868,231,988.97
  5. Step 5: Solve for x
    x = 971,868,231,988.97/981,700.09
  6. Step 6: Final answer
    x = 989,984.87

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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.