Home / 641,634.23-885,435.30-369,702.65

Finding the Fourth Proportional to 641,634.23, 885,435.30 and 369,702.65

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Solution

The fourth proportional to 641,634.23, 885,435.30 and 369,702.65 is: 510,178.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,634.23 : 885,435.30 = 369,702.65 : x
  2. Step 2: Convert to fraction form
    641,634.23/885,435.30 = 369,702.65/x
  3. Step 3: Cross multiply
    641,634.23x = 885,435.30 × 369,702.65
  4. Step 4: Simplify right side
    641,634.23x = 327,347,776,813.55
  5. Step 5: Solve for x
    x = 327,347,776,813.55/641,634.23
  6. Step 6: Final answer
    x = 510,178.17

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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.