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Finding the Fourth Proportional to 641,738.94, 885,692.40 and 369,754.72

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Solution

The fourth proportional to 641,738.94, 885,692.40 and 369,754.72 is: 510,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,738.94 : 885,692.40 = 369,754.72 : x
  2. Step 2: Convert to fraction form
    641,738.94/885,692.40 = 369,754.72/x
  3. Step 3: Cross multiply
    641,738.94x = 885,692.40 × 369,754.72
  4. Step 4: Simplify right side
    641,738.94x = 327,488,945,368.13
  5. Step 5: Solve for x
    x = 327,488,945,368.13/641,738.94
  6. Step 6: Final answer
    x = 510,314.90

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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.