Home / 421,379,101.80-632,068,652.70-344,788,612.20

Finding the Fourth Proportional to 421,379,101.80, 632,068,652.70 and 344,788,612.20

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Solution

The fourth proportional to 421,379,101.80, 632,068,652.70 and 344,788,612.20 is: 517,182,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,379,101.80 : 632,068,652.70 = 344,788,612.20 : x
  2. Step 2: Convert to fraction form
    421,379,101.80/632,068,652.70 = 344,788,612.20/x
  3. Step 3: Cross multiply
    421,379,101.80x = 632,068,652.70 × 344,788,612.20
  4. Step 4: Simplify right side
    421,379,101.80x = 217,930,073,579,556,800
  5. Step 5: Solve for x
    x = 217,930,073,579,556,800/421,379,101.80
  6. Step 6: Final answer
    x = 517,182,918.30

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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.