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Finding the Fourth Proportional to 654,361.68, 981,145.96 and 426,827.28

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Solution

The fourth proportional to 654,361.68, 981,145.96 and 426,827.28 is: 639,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,361.68 : 981,145.96 = 426,827.28 : x
  2. Step 2: Convert to fraction form
    654,361.68/981,145.96 = 426,827.28/x
  3. Step 3: Cross multiply
    654,361.68x = 981,145.96 × 426,827.28
  4. Step 4: Simplify right side
    654,361.68x = 418,779,861,389.79
  5. Step 5: Solve for x
    x = 418,779,861,389.79/654,361.68
  6. Step 6: Final answer
    x = 639,982.25

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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.