Home / 1,315,503,100.36-1,972,608,946.08-650,749,067.20

Finding the Fourth Proportional to 1,315,503,100.36, 1,972,608,946.08 and 650,749,067.20

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Solution

The fourth proportional to 1,315,503,100.36, 1,972,608,946.08 and 650,749,067.20 is: 975,804,185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,503,100.36 : 1,972,608,946.08 = 650,749,067.20 : x
  2. Step 2: Convert to fraction form
    1,315,503,100.36/1,972,608,946.08 = 650,749,067.20/x
  3. Step 3: Cross multiply
    1,315,503,100.36x = 1,972,608,946.08 × 650,749,067.20
  4. Step 4: Simplify right side
    1,315,503,100.36x = 1,283,673,431,611,935,232
  5. Step 5: Solve for x
    x = 1,283,673,431,611,935,232/1,315,503,100.36
  6. Step 6: Final answer
    x = 975,804,185.68

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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.