Home / 1,271,975,116.85-1,907,963,340.59-398,644,503.36

Finding the Fourth Proportional to 1,271,975,116.85, 1,907,963,340.59 and 398,644,503.36

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Solution

The fourth proportional to 1,271,975,116.85, 1,907,963,340.59 and 398,644,503.36 is: 597,966,963.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,975,116.85 : 1,907,963,340.59 = 398,644,503.36 : x
  2. Step 2: Convert to fraction form
    1,271,975,116.85/1,907,963,340.59 = 398,644,503.36/x
  3. Step 3: Cross multiply
    1,271,975,116.85x = 1,907,963,340.59 × 398,644,503.36
  4. Step 4: Simplify right side
    1,271,975,116.85x = 760,599,098,336,593,920
  5. Step 5: Solve for x
    x = 760,599,098,336,593,920/1,271,975,116.85
  6. Step 6: Final answer
    x = 597,966,963.55

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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.