Home / 1,355,314.36-1,870,019.84-811,243.30

Finding the Fourth Proportional to 1,355,314.36, 1,870,019.84 and 811,243.30

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Solution

The fourth proportional to 1,355,314.36, 1,870,019.84 and 811,243.30 is: 1,119,327.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,314.36 : 1,870,019.84 = 811,243.30 : x
  2. Step 2: Convert to fraction form
    1,355,314.36/1,870,019.84 = 811,243.30/x
  3. Step 3: Cross multiply
    1,355,314.36x = 1,870,019.84 × 811,243.30
  4. Step 4: Simplify right side
    1,355,314.36x = 1,517,041,066,067.07
  5. Step 5: Solve for x
    x = 1,517,041,066,067.07/1,355,314.36
  6. Step 6: Final answer
    x = 1,119,327.82

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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.