Home / 746,178.70-1,029,696.47-406,639.66

Finding the Fourth Proportional to 746,178.70, 1,029,696.47 and 406,639.66

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Solution

The fourth proportional to 746,178.70, 1,029,696.47 and 406,639.66 is: 561,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,178.70 : 1,029,696.47 = 406,639.66 : x
  2. Step 2: Convert to fraction form
    746,178.70/1,029,696.47 = 406,639.66/x
  3. Step 3: Cross multiply
    746,178.70x = 1,029,696.47 × 406,639.66
  4. Step 4: Simplify right side
    746,178.70x = 418,715,422,464.00
  5. Step 5: Solve for x
    x = 418,715,422,464.00/746,178.70
  6. Step 6: Final answer
    x = 561,146.31

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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.