Home / 918,922.92-1,378,384.38-419,937

Finding the Fourth Proportional to 918,922.92, 1,378,384.38 and 419,937

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Solution

The fourth proportional to 918,922.92, 1,378,384.38 and 419,937 is: 629,905.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,922.92 : 1,378,384.38 = 419,937 : x
  2. Step 2: Convert to fraction form
    918,922.92/1,378,384.38 = 419,937/x
  3. Step 3: Cross multiply
    918,922.92x = 1,378,384.38 × 419,937
  4. Step 4: Simplify right side
    918,922.92x = 578,834,601,384.06
  5. Step 5: Solve for x
    x = 578,834,601,384.06/918,922.92
  6. Step 6: Final answer
    x = 629,905.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.