Home / 697,910.70-1,042,138.38-554,142.78

Finding the Fourth Proportional to 697,910.70, 1,042,138.38 and 554,142.78

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Solution

The fourth proportional to 697,910.70, 1,042,138.38 and 554,142.78 is: 827,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,910.70 : 1,042,138.38 = 554,142.78 : x
  2. Step 2: Convert to fraction form
    697,910.70/1,042,138.38 = 554,142.78/x
  3. Step 3: Cross multiply
    697,910.70x = 1,042,138.38 × 554,142.78
  4. Step 4: Simplify right side
    697,910.70x = 577,493,459,037.90
  5. Step 5: Solve for x
    x = 577,493,459,037.90/697,910.70
  6. Step 6: Final answer
    x = 827,460.39

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Double scale
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Similar ratio
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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.