Home / 900,352,986.75-1,242,487,121.73-488,287,194.75

Finding the Fourth Proportional to 900,352,986.75, 1,242,487,121.73 and 488,287,194.75

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Solution

The fourth proportional to 900,352,986.75, 1,242,487,121.73 and 488,287,194.75 is: 673,836,328.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,352,986.75 : 1,242,487,121.73 = 488,287,194.75 : x
  2. Step 2: Convert to fraction form
    900,352,986.75/1,242,487,121.73 = 488,287,194.75/x
  3. Step 3: Cross multiply
    900,352,986.75x = 1,242,487,121.73 × 488,287,194.75
  4. Step 4: Simplify right side
    900,352,986.75x = 606,690,551,182,543,488
  5. Step 5: Solve for x
    x = 606,690,551,182,543,488/900,352,986.75
  6. Step 6: Final answer
    x = 673,836,328.76

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Double scale
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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.