Home / 647,139.70-970,554.03-331,434.10

Finding the Fourth Proportional to 647,139.70, 970,554.03 and 331,434.10

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Solution

The fourth proportional to 647,139.70, 970,554.03 and 331,434.10 is: 497,071.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,139.70 : 970,554.03 = 331,434.10 : x
  2. Step 2: Convert to fraction form
    647,139.70/970,554.03 = 331,434.10/x
  3. Step 3: Cross multiply
    647,139.70x = 970,554.03 × 331,434.10
  4. Step 4: Simplify right side
    647,139.70x = 321,674,701,434.42
  5. Step 5: Solve for x
    x = 321,674,701,434.42/647,139.70
  6. Step 6: Final answer
    x = 497,071.50

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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.