Home / 811,832.28-1,217,388.42-432,682.35

Finding the Fourth Proportional to 811,832.28, 1,217,388.42 and 432,682.35

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Solution

The fourth proportional to 811,832.28, 1,217,388.42 and 432,682.35 is: 648,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,832.28 : 1,217,388.42 = 432,682.35 : x
  2. Step 2: Convert to fraction form
    811,832.28/1,217,388.42 = 432,682.35/x
  3. Step 3: Cross multiply
    811,832.28x = 1,217,388.42 × 432,682.35
  4. Step 4: Simplify right side
    811,832.28x = 526,742,482,428.39
  5. Step 5: Solve for x
    x = 526,742,482,428.39/811,832.28
  6. Step 6: Final answer
    x = 648,831.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.