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Finding the Fourth Proportional to 881,467.80, 1,320,670.80 and 407,180.40

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Solution

The fourth proportional to 881,467.80, 1,320,670.80 and 407,180.40 is: 610,063.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,467.80 : 1,320,670.80 = 407,180.40 : x
  2. Step 2: Convert to fraction form
    881,467.80/1,320,670.80 = 407,180.40/x
  3. Step 3: Cross multiply
    881,467.80x = 1,320,670.80 × 407,180.40
  4. Step 4: Simplify right side
    881,467.80x = 537,751,264,612.32
  5. Step 5: Solve for x
    x = 537,751,264,612.32/881,467.80
  6. Step 6: Final answer
    x = 610,063.42

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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.