Home / 1,271,620,853.80-1,907,522,082.38-338,938,816.03

Finding the Fourth Proportional to 1,271,620,853.80, 1,907,522,082.38 and 338,938,816.03

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Solution

The fourth proportional to 1,271,620,853.80, 1,907,522,082.38 and 338,938,816.03 is: 508,432,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,620,853.80 : 1,907,522,082.38 = 338,938,816.03 : x
  2. Step 2: Convert to fraction form
    1,271,620,853.80/1,907,522,082.38 = 338,938,816.03/x
  3. Step 3: Cross multiply
    1,271,620,853.80x = 1,907,522,082.38 × 338,938,816.03
  4. Step 4: Simplify right side
    1,271,620,853.80x = 646,533,276,152,957,312
  5. Step 5: Solve for x
    x = 646,533,276,152,957,312/1,271,620,853.80
  6. Step 6: Final answer
    x = 508,432,426.40

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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.