Home / 1,457,395.81-2,011,209.79-812,857.75

Finding the Fourth Proportional to 1,457,395.81, 2,011,209.79 and 812,857.75

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Solution

The fourth proportional to 1,457,395.81, 2,011,209.79 and 812,857.75 is: 1,121,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457,395.81 : 2,011,209.79 = 812,857.75 : x
  2. Step 2: Convert to fraction form
    1,457,395.81/2,011,209.79 = 812,857.75/x
  3. Step 3: Cross multiply
    1,457,395.81x = 2,011,209.79 × 812,857.75
  4. Step 4: Simplify right side
    1,457,395.81x = 1,634,827,457,617.20
  5. Step 5: Solve for x
    x = 1,634,827,457,617.20/1,457,395.81
  6. Step 6: Final answer
    x = 1,121,745.68

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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.