Home / 1,517,131,788,820.40-2,275,831,465,418.40-428,038,315,021.72

Finding the Fourth Proportional to 1,517,131,788,820.40, 2,275,831,465,418.40 and 428,038,315,021.72

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Solution

The fourth proportional to 1,517,131,788,820.40, 2,275,831,465,418.40 and 428,038,315,021.72 is: 642,095,217,376.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517,131,788,820.40 : 2,275,831,465,418.40 = 428,038,315,021.72 : x
  2. Step 2: Convert to fraction form
    1,517,131,788,820.40/2,275,831,465,418.40 = 428,038,315,021.72/x
  3. Step 3: Cross multiply
    1,517,131,788,820.40x = 2,275,831,465,418.40 × 428,038,315,021.72
  4. Step 4: Simplify right side
    1,517,131,788,820.40x = 974,143,065,731,103,627,149,312
  5. Step 5: Solve for x
    x = 974,143,065,731,103,627,149,312/1,517,131,788,820.40
  6. Step 6: Final answer
    x = 642,095,217,376.28

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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.