Home / 839,261,642.80-1,258,388,579.40-431,114,954.80

Finding the Fourth Proportional to 839,261,642.80, 1,258,388,579.40 and 431,114,954.80

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Solution

The fourth proportional to 839,261,642.80, 1,258,388,579.40 and 431,114,954.80 is: 646,413,594.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,261,642.80 : 1,258,388,579.40 = 431,114,954.80 : x
  2. Step 2: Convert to fraction form
    839,261,642.80/1,258,388,579.40 = 431,114,954.80/x
  3. Step 3: Cross multiply
    839,261,642.80x = 1,258,388,579.40 × 431,114,954.80
  4. Step 4: Simplify right side
    839,261,642.80x = 542,510,135,528,867,264
  5. Step 5: Solve for x
    x = 542,510,135,528,867,264/839,261,642.80
  6. Step 6: Final answer
    x = 646,413,594.83

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1.5x scale

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.