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Finding the Fourth Proportional to 718,051.77, 990,906.48 and 395,762.04

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Solution

The fourth proportional to 718,051.77, 990,906.48 and 395,762.04 is: 546,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,051.77 : 990,906.48 = 395,762.04 : x
  2. Step 2: Convert to fraction form
    718,051.77/990,906.48 = 395,762.04/x
  3. Step 3: Cross multiply
    718,051.77x = 990,906.48 × 395,762.04
  4. Step 4: Simplify right side
    718,051.77x = 392,163,169,974.02
  5. Step 5: Solve for x
    x = 392,163,169,974.02/718,051.77
  6. Step 6: Final answer
    x = 546,148.88

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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.