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Finding the Fourth Proportional to 879,806.88, 1,319,698.80 and 214,964.64

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Solution

The fourth proportional to 879,806.88, 1,319,698.80 and 214,964.64 is: 322,444.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,806.88 : 1,319,698.80 = 214,964.64 : x
  2. Step 2: Convert to fraction form
    879,806.88/1,319,698.80 = 214,964.64/x
  3. Step 3: Cross multiply
    879,806.88x = 1,319,698.80 × 214,964.64
  4. Step 4: Simplify right side
    879,806.88x = 283,688,577,450.43
  5. Step 5: Solve for x
    x = 283,688,577,450.43/879,806.88
  6. Step 6: Final answer
    x = 322,444.15

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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.