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Finding the Fourth Proportional to 561,198.51, 774,708.84 and 357,528.69

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Solution

The fourth proportional to 561,198.51, 774,708.84 and 357,528.69 is: 493,551.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,198.51 : 774,708.84 = 357,528.69 : x
  2. Step 2: Convert to fraction form
    561,198.51/774,708.84 = 357,528.69/x
  3. Step 3: Cross multiply
    561,198.51x = 774,708.84 × 357,528.69
  4. Step 4: Simplify right side
    561,198.51x = 276,980,636,696.62
  5. Step 5: Solve for x
    x = 276,980,636,696.62/561,198.51
  6. Step 6: Final answer
    x = 493,551.98

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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.