Home / 690,440.40-1,035,719.06-210,775.68

Finding the Fourth Proportional to 690,440.40, 1,035,719.06 and 210,775.68

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Solution

The fourth proportional to 690,440.40, 1,035,719.06 and 210,775.68 is: 316,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,440.40 : 1,035,719.06 = 210,775.68 : x
  2. Step 2: Convert to fraction form
    690,440.40/1,035,719.06 = 210,775.68/x
  3. Step 3: Cross multiply
    690,440.40x = 1,035,719.06 × 210,775.68
  4. Step 4: Simplify right side
    690,440.40x = 218,304,388,106.58
  5. Step 5: Solve for x
    x = 218,304,388,106.58/690,440.40
  6. Step 6: Final answer
    x = 316,181.36

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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.