Home / 981,775,429.20-1,472,390,669.51-272,561,066.93

Finding the Fourth Proportional to 981,775,429.20, 1,472,390,669.51 and 272,561,066.93

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Solution

The fourth proportional to 981,775,429.20, 1,472,390,669.51 and 272,561,066.93 is: 408,765,955.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,775,429.20 : 1,472,390,669.51 = 272,561,066.93 : x
  2. Step 2: Convert to fraction form
    981,775,429.20/1,472,390,669.51 = 272,561,066.93/x
  3. Step 3: Cross multiply
    981,775,429.20x = 1,472,390,669.51 × 272,561,066.93
  4. Step 4: Simplify right side
    981,775,429.20x = 401,316,371,810,697,920
  5. Step 5: Solve for x
    x = 401,316,371,810,697,920/981,775,429.20
  6. Step 6: Final answer
    x = 408,765,955.91

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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.