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Finding the Fourth Proportional to 445,074.84, 668,490.30 and 382,406.76

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Solution

The fourth proportional to 445,074.84, 668,490.30 and 382,406.76 is: 574,364.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,074.84 : 668,490.30 = 382,406.76 : x
  2. Step 2: Convert to fraction form
    445,074.84/668,490.30 = 382,406.76/x
  3. Step 3: Cross multiply
    445,074.84x = 668,490.30 × 382,406.76
  4. Step 4: Simplify right side
    445,074.84x = 255,635,209,714.43
  5. Step 5: Solve for x
    x = 255,635,209,714.43/445,074.84
  6. Step 6: Final answer
    x = 574,364.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.