Home / 1,210,231,862.80-1,815,095,851.80-520,161,629.20

Finding the Fourth Proportional to 1,210,231,862.80, 1,815,095,851.80 and 520,161,629.20

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Solution

The fourth proportional to 1,210,231,862.80, 1,815,095,851.80 and 520,161,629.20 is: 780,134,158.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,231,862.80 : 1,815,095,851.80 = 520,161,629.20 : x
  2. Step 2: Convert to fraction form
    1,210,231,862.80/1,815,095,851.80 = 520,161,629.20/x
  3. Step 3: Cross multiply
    1,210,231,862.80x = 1,815,095,851.80 × 520,161,629.20
  4. Step 4: Simplify right side
    1,210,231,862.80x = 944,143,215,426,449,664
  5. Step 5: Solve for x
    x = 944,143,215,426,449,664/1,210,231,862.80
  6. Step 6: Final answer
    x = 780,134,158.13

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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.