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Finding the Fourth Proportional to 445,601.20, 668,401.80 and 429,854.80

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Solution

The fourth proportional to 445,601.20, 668,401.80 and 429,854.80 is: 644,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,601.20 : 668,401.80 = 429,854.80 : x
  2. Step 2: Convert to fraction form
    445,601.20/668,401.80 = 429,854.80/x
  3. Step 3: Cross multiply
    445,601.20x = 668,401.80 × 429,854.80
  4. Step 4: Simplify right side
    445,601.20x = 287,315,722,058.64
  5. Step 5: Solve for x
    x = 287,315,722,058.64/445,601.20
  6. Step 6: Final answer
    x = 644,782.20

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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.