Home / 697,760.92-962,898.42-391,840.12

Finding the Fourth Proportional to 697,760.92, 962,898.42 and 391,840.12

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Solution

The fourth proportional to 697,760.92, 962,898.42 and 391,840.12 is: 540,732.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,760.92 : 962,898.42 = 391,840.12 : x
  2. Step 2: Convert to fraction form
    697,760.92/962,898.42 = 391,840.12/x
  3. Step 3: Cross multiply
    697,760.92x = 962,898.42 × 391,840.12
  4. Step 4: Simplify right side
    697,760.92x = 377,302,232,440.61
  5. Step 5: Solve for x
    x = 377,302,232,440.61/697,760.92
  6. Step 6: Final answer
    x = 540,732.82

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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.