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Finding the Fourth Proportional to 668,020.50, 921,843.60 and 362,090.31

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Solution

The fourth proportional to 668,020.50, 921,843.60 and 362,090.31 is: 499,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,020.50 : 921,843.60 = 362,090.31 : x
  2. Step 2: Convert to fraction form
    668,020.50/921,843.60 = 362,090.31/x
  3. Step 3: Cross multiply
    668,020.50x = 921,843.60 × 362,090.31
  4. Step 4: Simplify right side
    668,020.50x = 333,790,637,604.22
  5. Step 5: Solve for x
    x = 333,790,637,604.22/668,020.50
  6. Step 6: Final answer
    x = 499,671.25

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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.