Home / 698,649.42-1,047,972.82-218,913.95

Finding the Fourth Proportional to 698,649.42, 1,047,972.82 and 218,913.95

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Solution

The fourth proportional to 698,649.42, 1,047,972.82 and 218,913.95 is: 328,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,649.42 : 1,047,972.82 = 218,913.95 : x
  2. Step 2: Convert to fraction form
    698,649.42/1,047,972.82 = 218,913.95/x
  3. Step 3: Cross multiply
    698,649.42x = 1,047,972.82 × 218,913.95
  4. Step 4: Simplify right side
    698,649.42x = 229,415,864,325.53
  5. Step 5: Solve for x
    x = 229,415,864,325.53/698,649.42
  6. Step 6: Final answer
    x = 328,370.51

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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.