Home / 919,378,923.20-1,379,740,231.20-647,281,131.20

Finding the Fourth Proportional to 919,378,923.20, 1,379,740,231.20 and 647,281,131.20

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Solution

The fourth proportional to 919,378,923.20, 1,379,740,231.20 and 647,281,131.20 is: 971,394,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,378,923.20 : 1,379,740,231.20 = 647,281,131.20 : x
  2. Step 2: Convert to fraction form
    919,378,923.20/1,379,740,231.20 = 647,281,131.20/x
  3. Step 3: Cross multiply
    919,378,923.20x = 1,379,740,231.20 × 647,281,131.20
  4. Step 4: Simplify right side
    919,378,923.20x = 893,079,817,613,285,632
  5. Step 5: Solve for x
    x = 893,079,817,613,285,632/919,378,923.20
  6. Step 6: Final answer
    x = 971,394,704.70

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1.5x scale

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.