Home / 1,355,780.52-1,871,035.74-812,004.84

Finding the Fourth Proportional to 1,355,780.52, 1,871,035.74 and 812,004.84

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Solution

The fourth proportional to 1,355,780.52, 1,871,035.74 and 812,004.84 is: 1,120,601.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,780.52 : 1,871,035.74 = 812,004.84 : x
  2. Step 2: Convert to fraction form
    1,355,780.52/1,871,035.74 = 812,004.84/x
  3. Step 3: Cross multiply
    1,355,780.52x = 1,871,035.74 × 812,004.84
  4. Step 4: Simplify right side
    1,355,780.52x = 1,519,290,076,692.98
  5. Step 5: Solve for x
    x = 1,519,290,076,692.98/1,355,780.52
  6. Step 6: Final answer
    x = 1,120,601.79

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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.