Home / 686,006.22-1,024,115.25-640,418.45

Finding the Fourth Proportional to 686,006.22, 1,024,115.25 and 640,418.45

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Solution

The fourth proportional to 686,006.22, 1,024,115.25 and 640,418.45 is: 956,058.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,006.22 : 1,024,115.25 = 640,418.45 : x
  2. Step 2: Convert to fraction form
    686,006.22/1,024,115.25 = 640,418.45/x
  3. Step 3: Cross multiply
    686,006.22x = 1,024,115.25 × 640,418.45
  4. Step 4: Simplify right side
    686,006.22x = 655,862,298,307.36
  5. Step 5: Solve for x
    x = 655,862,298,307.36/686,006.22
  6. Step 6: Final answer
    x = 956,058.82

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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.