Home / 1,271,620,836.62-1,907,522,056.55-338,938,798.81

Finding the Fourth Proportional to 1,271,620,836.62, 1,907,522,056.55 and 338,938,798.81

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Solution

The fourth proportional to 1,271,620,836.62, 1,907,522,056.55 and 338,938,798.81 is: 508,432,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,620,836.62 : 1,907,522,056.55 = 338,938,798.81 : x
  2. Step 2: Convert to fraction form
    1,271,620,836.62/1,907,522,056.55 = 338,938,798.81/x
  3. Step 3: Cross multiply
    1,271,620,836.62x = 1,907,522,056.55 × 338,938,798.81
  4. Step 4: Simplify right side
    1,271,620,836.62x = 646,533,234,550,637,824
  5. Step 5: Solve for x
    x = 646,533,234,550,637,824/1,271,620,836.62
  6. Step 6: Final answer
    x = 508,432,400.55

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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.