Home / 697,265.31-962,185.68-391,313.10

Finding the Fourth Proportional to 697,265.31, 962,185.68 and 391,313.10

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Solution

The fourth proportional to 697,265.31, 962,185.68 and 391,313.10 is: 539,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,265.31 : 962,185.68 = 391,313.10 : x
  2. Step 2: Convert to fraction form
    697,265.31/962,185.68 = 391,313.10/x
  3. Step 3: Cross multiply
    697,265.31x = 962,185.68 × 391,313.10
  4. Step 4: Simplify right side
    697,265.31x = 376,515,861,216.41
  5. Step 5: Solve for x
    x = 376,515,861,216.41/697,265.31
  6. Step 6: Final answer
    x = 539,989.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.