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Finding the Fourth Proportional to 654,064.60, 902,629.63 and 395,988.88

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Solution

The fourth proportional to 654,064.60, 902,629.63 and 395,988.88 is: 546,477.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,064.60 : 902,629.63 = 395,988.88 : x
  2. Step 2: Convert to fraction form
    654,064.60/902,629.63 = 395,988.88/x
  3. Step 3: Cross multiply
    654,064.60x = 902,629.63 × 395,988.88
  4. Step 4: Simplify right side
    654,064.60x = 357,431,296,238.51
  5. Step 5: Solve for x
    x = 357,431,296,238.51/654,064.60
  6. Step 6: Final answer
    x = 546,477.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.