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Finding the Fourth Proportional to 604,222.64, 833,868 and 399,921.62

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Solution

The fourth proportional to 604,222.64, 833,868 and 399,921.62 is: 551,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,222.64 : 833,868 = 399,921.62 : x
  2. Step 2: Convert to fraction form
    604,222.64/833,868 = 399,921.62/x
  3. Step 3: Cross multiply
    604,222.64x = 833,868 × 399,921.62
  4. Step 4: Simplify right side
    604,222.64x = 333,481,841,426.16
  5. Step 5: Solve for x
    x = 333,481,841,426.16/604,222.64
  6. Step 6: Final answer
    x = 551,918.81

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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.