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Finding the Fourth Proportional to 641,758.63, 885,659.52 and 369,870.79

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Solution

The fourth proportional to 641,758.63, 885,659.52 and 369,870.79 is: 510,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,758.63 : 885,659.52 = 369,870.79 : x
  2. Step 2: Convert to fraction form
    641,758.63/885,659.52 = 369,870.79/x
  3. Step 3: Cross multiply
    641,758.63x = 885,659.52 × 369,870.79
  4. Step 4: Simplify right side
    641,758.63x = 327,579,586,333.42
  5. Step 5: Solve for x
    x = 327,579,586,333.42/641,758.63
  6. Step 6: Final answer
    x = 510,440.48

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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.