Home / 621,664,823.71-857,893,015.20-339,407,255.77

Finding the Fourth Proportional to 621,664,823.71, 857,893,015.20 and 339,407,255.77

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Solution

The fourth proportional to 621,664,823.71, 857,893,015.20 and 339,407,255.77 is: 468,379,588.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,664,823.71 : 857,893,015.20 = 339,407,255.77 : x
  2. Step 2: Convert to fraction form
    621,664,823.71/857,893,015.20 = 339,407,255.77/x
  3. Step 3: Cross multiply
    621,664,823.71x = 857,893,015.20 × 339,407,255.77
  4. Step 4: Simplify right side
    621,664,823.71x = 291,175,114,033,282,880
  5. Step 5: Solve for x
    x = 291,175,114,033,282,880/621,664,823.71
  6. Step 6: Final answer
    x = 468,379,588.05

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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.