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Finding the Fourth Proportional to 707,145.60, 1,059,796.80 and 328,022.40

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Solution

The fourth proportional to 707,145.60, 1,059,796.80 and 328,022.40 is: 491,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,145.60 : 1,059,796.80 = 328,022.40 : x
  2. Step 2: Convert to fraction form
    707,145.60/1,059,796.80 = 328,022.40/x
  3. Step 3: Cross multiply
    707,145.60x = 1,059,796.80 × 328,022.40
  4. Step 4: Simplify right side
    707,145.60x = 347,637,089,848.32
  5. Step 5: Solve for x
    x = 347,637,089,848.32/707,145.60
  6. Step 6: Final answer
    x = 491,606.10

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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.