Home / 1,186,343.21-1,637,145.41-642,466.55

Finding the Fourth Proportional to 1,186,343.21, 1,637,145.41 and 642,466.55

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Solution

The fourth proportional to 1,186,343.21, 1,637,145.41 and 642,466.55 is: 886,599.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,343.21 : 1,637,145.41 = 642,466.55 : x
  2. Step 2: Convert to fraction form
    1,186,343.21/1,637,145.41 = 642,466.55/x
  3. Step 3: Cross multiply
    1,186,343.21x = 1,637,145.41 × 642,466.55
  4. Step 4: Simplify right side
    1,186,343.21x = 1,051,811,164,291.57
  5. Step 5: Solve for x
    x = 1,051,811,164,291.57/1,186,343.21
  6. Step 6: Final answer
    x = 886,599.39

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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.