Home / 670,680.34-1,005,807.11-221,317.45

Finding the Fourth Proportional to 670,680.34, 1,005,807.11 and 221,317.45

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Solution

The fourth proportional to 670,680.34, 1,005,807.11 and 221,317.45 is: 331,905.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,680.34 : 1,005,807.11 = 221,317.45 : x
  2. Step 2: Convert to fraction form
    670,680.34/1,005,807.11 = 221,317.45/x
  3. Step 3: Cross multiply
    670,680.34x = 1,005,807.11 × 221,317.45
  4. Step 4: Simplify right side
    670,680.34x = 222,602,661,155.96
  5. Step 5: Solve for x
    x = 222,602,661,155.96/670,680.34
  6. Step 6: Final answer
    x = 331,905.75

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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.