Home / 1,660,394,419.52-2,291,371,521.44-991,397,925.20

Finding the Fourth Proportional to 1,660,394,419.52, 2,291,371,521.44 and 991,397,925.20

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Solution

The fourth proportional to 1,660,394,419.52, 2,291,371,521.44 and 991,397,925.20 is: 1,368,145,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660,394,419.52 : 2,291,371,521.44 = 991,397,925.20 : x
  2. Step 2: Convert to fraction form
    1,660,394,419.52/2,291,371,521.44 = 991,397,925.20/x
  3. Step 3: Cross multiply
    1,660,394,419.52x = 2,291,371,521.44 × 991,397,925.20
  4. Step 4: Simplify right side
    1,660,394,419.52x = 2,271,660,972,207,100,416
  5. Step 5: Solve for x
    x = 2,271,660,972,207,100,416/1,660,394,419.52
  6. Step 6: Final answer
    x = 1,368,145,390.93

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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.