Home / 1,292,760,313.20-1,939,140,469.80-1,272,352,978.80

Finding the Fourth Proportional to 1,292,760,313.20, 1,939,140,469.80 and 1,272,352,978.80

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Solution

The fourth proportional to 1,292,760,313.20, 1,939,140,469.80 and 1,272,352,978.80 is: 1,908,529,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,760,313.20 : 1,939,140,469.80 = 1,272,352,978.80 : x
  2. Step 2: Convert to fraction form
    1,292,760,313.20/1,939,140,469.80 = 1,272,352,978.80/x
  3. Step 3: Cross multiply
    1,292,760,313.20x = 1,939,140,469.80 × 1,272,352,978.80
  4. Step 4: Simplify right side
    1,292,760,313.20x = 2,467,271,153,061,661,184
  5. Step 5: Solve for x
    x = 2,467,271,153,061,661,184/1,292,760,313.20
  6. Step 6: Final answer
    x = 1,908,529,468.20

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Double scale
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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.