Home / 876,562,081.13-1,209,693,696.60-485,421,505.13

Finding the Fourth Proportional to 876,562,081.13, 1,209,693,696.60 and 485,421,505.13

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Solution

The fourth proportional to 876,562,081.13, 1,209,693,696.60 and 485,421,505.13 is: 669,902,734.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,562,081.13 : 1,209,693,696.60 = 485,421,505.13 : x
  2. Step 2: Convert to fraction form
    876,562,081.13/1,209,693,696.60 = 485,421,505.13/x
  3. Step 3: Cross multiply
    876,562,081.13x = 1,209,693,696.60 × 485,421,505.13
  4. Step 4: Simplify right side
    876,562,081.13x = 587,211,334,943,796,992
  5. Step 5: Solve for x
    x = 587,211,334,943,796,992/876,562,081.13
  6. Step 6: Final answer
    x = 669,902,734.32

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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.