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Finding the Fourth Proportional to 682,725.12, 942,153.72 and 376,804.32

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Solution

The fourth proportional to 682,725.12, 942,153.72 and 376,804.32 is: 519,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,725.12 : 942,153.72 = 376,804.32 : x
  2. Step 2: Convert to fraction form
    682,725.12/942,153.72 = 376,804.32/x
  3. Step 3: Cross multiply
    682,725.12x = 942,153.72 × 376,804.32
  4. Step 4: Simplify right side
    682,725.12x = 355,007,591,800.07
  5. Step 5: Solve for x
    x = 355,007,591,800.07/682,725.12
  6. Step 6: Final answer
    x = 519,986.13

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1.5x scale

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.