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Finding the Fourth Proportional to 450,279.88, 621,115.50 and 297,319.48

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Solution

The fourth proportional to 450,279.88, 621,115.50 and 297,319.48 is: 410,122.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,279.88 : 621,115.50 = 297,319.48 : x
  2. Step 2: Convert to fraction form
    450,279.88/621,115.50 = 297,319.48/x
  3. Step 3: Cross multiply
    450,279.88x = 621,115.50 × 297,319.48
  4. Step 4: Simplify right side
    450,279.88x = 184,669,737,479.94
  5. Step 5: Solve for x
    x = 184,669,737,479.94/450,279.88
  6. Step 6: Final answer
    x = 410,122.12

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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.