Home / 758,941,916.59-1,047,320,172.78-419,862,919.33

Finding the Fourth Proportional to 758,941,916.59, 1,047,320,172.78 and 419,862,919.33

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Solution

The fourth proportional to 758,941,916.59, 1,047,320,172.78 and 419,862,919.33 is: 579,399,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,941,916.59 : 1,047,320,172.78 = 419,862,919.33 : x
  2. Step 2: Convert to fraction form
    758,941,916.59/1,047,320,172.78 = 419,862,919.33/x
  3. Step 3: Cross multiply
    758,941,916.59x = 1,047,320,172.78 × 419,862,919.33
  4. Step 4: Simplify right side
    758,941,916.59x = 439,730,905,216,366,464
  5. Step 5: Solve for x
    x = 439,730,905,216,366,464/758,941,916.59
  6. Step 6: Final answer
    x = 579,399,945.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.