Home / 621,436.24-931,508.28-421,772.88

Finding the Fourth Proportional to 621,436.24, 931,508.28 and 421,772.88

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Solution

The fourth proportional to 621,436.24, 931,508.28 and 421,772.88 is: 632,220.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,436.24 : 931,508.28 = 421,772.88 : x
  2. Step 2: Convert to fraction form
    621,436.24/931,508.28 = 421,772.88/x
  3. Step 3: Cross multiply
    621,436.24x = 931,508.28 × 421,772.88
  4. Step 4: Simplify right side
    621,436.24x = 392,884,929,999.45
  5. Step 5: Solve for x
    x = 392,884,929,999.45/621,436.24
  6. Step 6: Final answer
    x = 632,220.82

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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.