Home / 685,315,801.52-1,026,297,191.90-618,991,217.49

Finding the Fourth Proportional to 685,315,801.52, 1,026,297,191.90 and 618,991,217.49

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Solution

The fourth proportional to 685,315,801.52, 1,026,297,191.90 and 618,991,217.49 is: 926,972,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,315,801.52 : 1,026,297,191.90 = 618,991,217.49 : x
  2. Step 2: Convert to fraction form
    685,315,801.52/1,026,297,191.90 = 618,991,217.49/x
  3. Step 3: Cross multiply
    685,315,801.52x = 1,026,297,191.90 × 618,991,217.49
  4. Step 4: Simplify right side
    685,315,801.52x = 635,268,948,317,654,272
  5. Step 5: Solve for x
    x = 635,268,948,317,654,272/685,315,801.52
  6. Step 6: Final answer
    x = 926,972,567.85

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Double scale
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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.