Home / 621,121,120.20-930,890,423.70-330,127,648.20

Finding the Fourth Proportional to 621,121,120.20, 930,890,423.70 and 330,127,648.20

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Solution

The fourth proportional to 621,121,120.20, 930,890,423.70 and 330,127,648.20 is: 494,770,917.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,121,120.20 : 930,890,423.70 = 330,127,648.20 : x
  2. Step 2: Convert to fraction form
    621,121,120.20/930,890,423.70 = 330,127,648.20/x
  3. Step 3: Cross multiply
    621,121,120.20x = 930,890,423.70 × 330,127,648.20
  4. Step 4: Simplify right side
    621,121,120.20x = 307,312,666,307,982,528
  5. Step 5: Solve for x
    x = 307,312,666,307,982,528/621,121,120.20
  6. Step 6: Final answer
    x = 494,770,917.16

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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.