Home / 686,007.22-1,024,116.75-640,419.45

Finding the Fourth Proportional to 686,007.22, 1,024,116.75 and 640,419.45

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Solution

The fourth proportional to 686,007.22, 1,024,116.75 and 640,419.45 is: 956,060.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,007.22 : 1,024,116.75 = 640,419.45 : x
  2. Step 2: Convert to fraction form
    686,007.22/1,024,116.75 = 640,419.45/x
  3. Step 3: Cross multiply
    686,007.22x = 1,024,116.75 × 640,419.45
  4. Step 4: Simplify right side
    686,007.22x = 655,864,285,770.79
  5. Step 5: Solve for x
    x = 655,864,285,770.79/686,007.22
  6. Step 6: Final answer
    x = 956,060.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.