Home / 621,434.24-931,505.28-421,770.88

Finding the Fourth Proportional to 621,434.24, 931,505.28 and 421,770.88

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Solution

The fourth proportional to 621,434.24, 931,505.28 and 421,770.88 is: 632,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,434.24 : 931,505.28 = 421,770.88 : x
  2. Step 2: Convert to fraction form
    621,434.24/931,505.28 = 421,770.88/x
  3. Step 3: Cross multiply
    621,434.24x = 931,505.28 × 421,770.88
  4. Step 4: Simplify right side
    621,434.24x = 392,881,801,670.25
  5. Step 5: Solve for x
    x = 392,881,801,670.25/621,434.24
  6. Step 6: Final answer
    x = 632,217.82

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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.