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Finding the Fourth Proportional to 445,577.20, 668,365.80 and 429,830.80

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Solution

The fourth proportional to 445,577.20, 668,365.80 and 429,830.80 is: 644,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,577.20 : 668,365.80 = 429,830.80 : x
  2. Step 2: Convert to fraction form
    445,577.20/668,365.80 = 429,830.80/x
  3. Step 3: Cross multiply
    445,577.20x = 668,365.80 × 429,830.80
  4. Step 4: Simplify right side
    445,577.20x = 287,284,206,506.64
  5. Step 5: Solve for x
    x = 287,284,206,506.64/445,577.20
  6. Step 6: Final answer
    x = 644,746.20

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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.