Home / 1,660,394,425.52-2,291,371,529.72-991,397,931.20

Finding the Fourth Proportional to 1,660,394,425.52, 2,291,371,529.72 and 991,397,931.20

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Solution

The fourth proportional to 1,660,394,425.52, 2,291,371,529.72 and 991,397,931.20 is: 1,368,145,399.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660,394,425.52 : 2,291,371,529.72 = 991,397,931.20 : x
  2. Step 2: Convert to fraction form
    1,660,394,425.52/2,291,371,529.72 = 991,397,931.20/x
  3. Step 3: Cross multiply
    1,660,394,425.52x = 2,291,371,529.72 × 991,397,931.20
  4. Step 4: Simplify right side
    1,660,394,425.52x = 2,271,660,994,174,987,264
  5. Step 5: Solve for x
    x = 2,271,660,994,174,987,264/1,660,394,425.52
  6. Step 6: Final answer
    x = 1,368,145,399.23

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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.