Home / 621,111,921.20-930,876,625.20-330,118,449.20

Finding the Fourth Proportional to 621,111,921.20, 930,876,625.20 and 330,118,449.20

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Solution

The fourth proportional to 621,111,921.20, 930,876,625.20 and 330,118,449.20 is: 494,757,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,111,921.20 : 930,876,625.20 = 330,118,449.20 : x
  2. Step 2: Convert to fraction form
    621,111,921.20/930,876,625.20 = 330,118,449.20/x
  3. Step 3: Cross multiply
    621,111,921.20x = 930,876,625.20 × 330,118,449.20
  4. Step 4: Simplify right side
    621,111,921.20x = 307,299,547,907,553,664
  5. Step 5: Solve for x
    x = 307,299,547,907,553,664/621,111,921.20
  6. Step 6: Final answer
    x = 494,757,124.15

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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.