Home / 1,186,515.32-1,637,381.22-642,638.48

Finding the Fourth Proportional to 1,186,515.32, 1,637,381.22 and 642,638.48

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Solution

The fourth proportional to 1,186,515.32, 1,637,381.22 and 642,638.48 is: 886,835.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,515.32 : 1,637,381.22 = 642,638.48 : x
  2. Step 2: Convert to fraction form
    1,186,515.32/1,637,381.22 = 642,638.48/x
  3. Step 3: Cross multiply
    1,186,515.32x = 1,637,381.22 × 642,638.48
  4. Step 4: Simplify right side
    1,186,515.32x = 1,052,244,178,401.35
  5. Step 5: Solve for x
    x = 1,052,244,178,401.35/1,186,515.32
  6. Step 6: Final answer
    x = 886,835.73

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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.