Home / 1,355,995.80-1,871,137.96-812,117.66

Finding the Fourth Proportional to 1,355,995.80, 1,871,137.96 and 812,117.66

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Solution

The fourth proportional to 1,355,995.80, 1,871,137.96 and 812,117.66 is: 1,120,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,995.80 : 1,871,137.96 = 812,117.66 : x
  2. Step 2: Convert to fraction form
    1,355,995.80/1,871,137.96 = 812,117.66/x
  3. Step 3: Cross multiply
    1,355,995.80x = 1,871,137.96 × 812,117.66
  4. Step 4: Simplify right side
    1,355,995.80x = 1,519,584,181,612.37
  5. Step 5: Solve for x
    x = 1,519,584,181,612.37/1,355,995.80
  6. Step 6: Final answer
    x = 1,120,640.77

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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.