Home / 1,260,780,995.80-1,891,171,493.70-442,893,296.80

Finding the Fourth Proportional to 1,260,780,995.80, 1,891,171,493.70 and 442,893,296.80

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Solution

The fourth proportional to 1,260,780,995.80, 1,891,171,493.70 and 442,893,296.80 is: 664,339,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,780,995.80 : 1,891,171,493.70 = 442,893,296.80 : x
  2. Step 2: Convert to fraction form
    1,260,780,995.80/1,891,171,493.70 = 442,893,296.80/x
  3. Step 3: Cross multiply
    1,260,780,995.80x = 1,891,171,493.70 × 442,893,296.80
  4. Step 4: Simplify right side
    1,260,780,995.80x = 837,587,177,658,973,440
  5. Step 5: Solve for x
    x = 837,587,177,658,973,440/1,260,780,995.80
  6. Step 6: Final answer
    x = 664,339,945.20

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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.