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Finding the Fourth Proportional to 491,570.69, 678,005.38 and 370,717.07

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Solution

The fourth proportional to 491,570.69, 678,005.38 and 370,717.07 is: 511,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,570.69 : 678,005.38 = 370,717.07 : x
  2. Step 2: Convert to fraction form
    491,570.69/678,005.38 = 370,717.07/x
  3. Step 3: Cross multiply
    491,570.69x = 678,005.38 × 370,717.07
  4. Step 4: Simplify right side
    491,570.69x = 251,348,167,917.84
  5. Step 5: Solve for x
    x = 251,348,167,917.84/491,570.69
  6. Step 6: Final answer
    x = 511,316.43

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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.