Home / 1,383,854,641.26-1,909,718,159.67-781,152,153.90

Finding the Fourth Proportional to 1,383,854,641.26, 1,909,718,159.67 and 781,152,153.90

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Solution

The fourth proportional to 1,383,854,641.26, 1,909,718,159.67 and 781,152,153.90 is: 1,077,989,269.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,854,641.26 : 1,909,718,159.67 = 781,152,153.90 : x
  2. Step 2: Convert to fraction form
    1,383,854,641.26/1,909,718,159.67 = 781,152,153.90/x
  3. Step 3: Cross multiply
    1,383,854,641.26x = 1,909,718,159.67 × 781,152,153.90
  4. Step 4: Simplify right side
    1,383,854,641.26x = 1,491,780,453,768,164,608
  5. Step 5: Solve for x
    x = 1,491,780,453,768,164,608/1,383,854,641.26
  6. Step 6: Final answer
    x = 1,077,989,269.46

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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.