Home / 858,391,531.20-1,287,587,296.80-313,150,852.80

Finding the Fourth Proportional to 858,391,531.20, 1,287,587,296.80 and 313,150,852.80

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Solution

The fourth proportional to 858,391,531.20, 1,287,587,296.80 and 313,150,852.80 is: 469,726,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,391,531.20 : 1,287,587,296.80 = 313,150,852.80 : x
  2. Step 2: Convert to fraction form
    858,391,531.20/1,287,587,296.80 = 313,150,852.80/x
  3. Step 3: Cross multiply
    858,391,531.20x = 1,287,587,296.80 × 313,150,852.80
  4. Step 4: Simplify right side
    858,391,531.20x = 403,209,060,047,366,720
  5. Step 5: Solve for x
    x = 403,209,060,047,366,720/858,391,531.20
  6. Step 6: Final answer
    x = 469,726,279.20

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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.