Home / 1,991,465,230.60-2,987,197,845.90-842,458,587.40

Finding the Fourth Proportional to 1,991,465,230.60, 2,987,197,845.90 and 842,458,587.40

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Solution

The fourth proportional to 1,991,465,230.60, 2,987,197,845.90 and 842,458,587.40 is: 1,263,687,881.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,465,230.60 : 2,987,197,845.90 = 842,458,587.40 : x
  2. Step 2: Convert to fraction form
    1,991,465,230.60/2,987,197,845.90 = 842,458,587.40/x
  3. Step 3: Cross multiply
    1,991,465,230.60x = 2,987,197,845.90 × 842,458,587.40
  4. Step 4: Simplify right side
    1,991,465,230.60x = 2,516,590,477,541,236,736
  5. Step 5: Solve for x
    x = 2,516,590,477,541,236,736/1,991,465,230.60
  6. Step 6: Final answer
    x = 1,263,687,881.10

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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.