Home / 1,271,620,835.12-1,907,522,054.30-338,938,797.31

Finding the Fourth Proportional to 1,271,620,835.12, 1,907,522,054.30 and 338,938,797.31

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Solution

The fourth proportional to 1,271,620,835.12, 1,907,522,054.30 and 338,938,797.31 is: 508,432,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,620,835.12 : 1,907,522,054.30 = 338,938,797.31 : x
  2. Step 2: Convert to fraction form
    1,271,620,835.12/1,907,522,054.30 = 338,938,797.31/x
  3. Step 3: Cross multiply
    1,271,620,835.12x = 1,907,522,054.30 × 338,938,797.31
  4. Step 4: Simplify right side
    1,271,620,835.12x = 646,533,230,926,742,528
  5. Step 5: Solve for x
    x = 646,533,230,926,742,528/1,271,620,835.12
  6. Step 6: Final answer
    x = 508,432,398.30

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Double scale
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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.