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Finding the Fourth Proportional to 613,202.25, 845,495.16 and 419,703.18

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Solution

The fourth proportional to 613,202.25, 845,495.16 and 419,703.18 is: 578,694.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,202.25 : 845,495.16 = 419,703.18 : x
  2. Step 2: Convert to fraction form
    613,202.25/845,495.16 = 419,703.18/x
  3. Step 3: Cross multiply
    613,202.25x = 845,495.16 × 419,703.18
  4. Step 4: Simplify right side
    613,202.25x = 354,857,007,326.61
  5. Step 5: Solve for x
    x = 354,857,007,326.61/613,202.25
  6. Step 6: Final answer
    x = 578,694.89

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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.