Home / 903,620,738.75-1,247,491,420.65-632,458,558.04

Finding the Fourth Proportional to 903,620,738.75, 1,247,491,420.65 and 632,458,558.04

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Solution

The fourth proportional to 903,620,738.75, 1,247,491,420.65 and 632,458,558.04 is: 873,139,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,620,738.75 : 1,247,491,420.65 = 632,458,558.04 : x
  2. Step 2: Convert to fraction form
    903,620,738.75/1,247,491,420.65 = 632,458,558.04/x
  3. Step 3: Cross multiply
    903,620,738.75x = 1,247,491,420.65 × 632,458,558.04
  4. Step 4: Simplify right side
    903,620,738.75x = 788,986,625,065,332,608
  5. Step 5: Solve for x
    x = 788,986,625,065,332,608/903,620,738.75
  6. Step 6: Final answer
    x = 873,139,129.32

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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.