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Finding the Fourth Proportional to 570,261,112.59, 787,315,763.13 and 391,952,028.27

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Solution

The fourth proportional to 570,261,112.59, 787,315,763.13 and 391,952,028.27 is: 541,138,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,261,112.59 : 787,315,763.13 = 391,952,028.27 : x
  2. Step 2: Convert to fraction form
    570,261,112.59/787,315,763.13 = 391,952,028.27/x
  3. Step 3: Cross multiply
    570,261,112.59x = 787,315,763.13 × 391,952,028.27
  4. Step 4: Simplify right side
    570,261,112.59x = 308,590,010,247,746,368
  5. Step 5: Solve for x
    x = 308,590,010,247,746,368/570,261,112.59
  6. Step 6: Final answer
    x = 541,138,091.72

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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.