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Finding the Fourth Proportional to 445,925.80, 668,888.70 and 268,978.60

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Solution

The fourth proportional to 445,925.80, 668,888.70 and 268,978.60 is: 403,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,925.80 : 668,888.70 = 268,978.60 : x
  2. Step 2: Convert to fraction form
    445,925.80/668,888.70 = 268,978.60/x
  3. Step 3: Cross multiply
    445,925.80x = 668,888.70 × 268,978.60
  4. Step 4: Simplify right side
    445,925.80x = 179,916,746,081.82
  5. Step 5: Solve for x
    x = 179,916,746,081.82/445,925.80
  6. Step 6: Final answer
    x = 403,467.90

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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.