Home / 1,356,432.72-1,871,809.44-783,438.72

Finding the Fourth Proportional to 1,356,432.72, 1,871,809.44 and 783,438.72

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Solution

The fourth proportional to 1,356,432.72, 1,871,809.44 and 783,438.72 is: 1,081,106.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356,432.72 : 1,871,809.44 = 783,438.72 : x
  2. Step 2: Convert to fraction form
    1,356,432.72/1,871,809.44 = 783,438.72/x
  3. Step 3: Cross multiply
    1,356,432.72x = 1,871,809.44 × 783,438.72
  4. Step 4: Simplify right side
    1,356,432.72x = 1,466,447,991,757.52
  5. Step 5: Solve for x
    x = 1,466,447,991,757.52/1,356,432.72
  6. Step 6: Final answer
    x = 1,081,106.32

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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.