Home / 490,120,212.80-735,180,319.20-429,654,036.80

Finding the Fourth Proportional to 490,120,212.80, 735,180,319.20 and 429,654,036.80

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Solution

The fourth proportional to 490,120,212.80, 735,180,319.20 and 429,654,036.80 is: 644,481,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,120,212.80 : 735,180,319.20 = 429,654,036.80 : x
  2. Step 2: Convert to fraction form
    490,120,212.80/735,180,319.20 = 429,654,036.80/x
  3. Step 3: Cross multiply
    490,120,212.80x = 735,180,319.20 × 429,654,036.80
  4. Step 4: Simplify right side
    490,120,212.80x = 315,873,191,920,192,576
  5. Step 5: Solve for x
    x = 315,873,191,920,192,576/490,120,212.80
  6. Step 6: Final answer
    x = 644,481,055.20

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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.