Home / 1,457,571.40-2,011,443.30-812,991.10

Finding the Fourth Proportional to 1,457,571.40, 2,011,443.30 and 812,991.10

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Solution

The fourth proportional to 1,457,571.40, 2,011,443.30 and 812,991.10 is: 1,121,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457,571.40 : 2,011,443.30 = 812,991.10 : x
  2. Step 2: Convert to fraction form
    1,457,571.40/2,011,443.30 = 812,991.10/x
  3. Step 3: Cross multiply
    1,457,571.40x = 2,011,443.30 × 812,991.10
  4. Step 4: Simplify right side
    1,457,571.40x = 1,635,285,501,054.63
  5. Step 5: Solve for x
    x = 1,635,285,501,054.63/1,457,571.40
  6. Step 6: Final answer
    x = 1,121,924.80

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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.