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Finding the Fourth Proportional to 445,498.90, 668,818.59 and 382,720.66

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Solution

The fourth proportional to 445,498.90, 668,818.59 and 382,720.66 is: 574,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,498.90 : 668,818.59 = 382,720.66 : x
  2. Step 2: Convert to fraction form
    445,498.90/668,818.59 = 382,720.66/x
  3. Step 3: Cross multiply
    445,498.90x = 668,818.59 × 382,720.66
  4. Step 4: Simplify right side
    445,498.90x = 255,970,692,185.07
  5. Step 5: Solve for x
    x = 255,970,692,185.07/445,498.90
  6. Step 6: Final answer
    x = 574,570.87

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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.