Home / 1,383,854,650.26-1,909,718,172.08-781,152,162.90

Finding the Fourth Proportional to 1,383,854,650.26, 1,909,718,172.08 and 781,152,162.90

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Solution

The fourth proportional to 1,383,854,650.26, 1,909,718,172.08 and 781,152,162.90 is: 1,077,989,281.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,854,650.26 : 1,909,718,172.08 = 781,152,162.90 : x
  2. Step 2: Convert to fraction form
    1,383,854,650.26/1,909,718,172.08 = 781,152,162.90/x
  3. Step 3: Cross multiply
    1,383,854,650.26x = 1,909,718,172.08 × 781,152,162.90
  4. Step 4: Simplify right side
    1,383,854,650.26x = 1,491,780,480,649,726,208
  5. Step 5: Solve for x
    x = 1,491,780,480,649,726,208/1,383,854,650.26
  6. Step 6: Final answer
    x = 1,077,989,281.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.