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Finding the Fourth Proportional to 896,291.94, 1,236,866.94 and 488,396.64

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Solution

The fourth proportional to 896,291.94, 1,236,866.94 and 488,396.64 is: 673,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,291.94 : 1,236,866.94 = 488,396.64 : x
  2. Step 2: Convert to fraction form
    896,291.94/1,236,866.94 = 488,396.64/x
  3. Step 3: Cross multiply
    896,291.94x = 1,236,866.94 × 488,396.64
  4. Step 4: Simplify right side
    896,291.94x = 604,081,657,623.08
  5. Step 5: Solve for x
    x = 604,081,657,623.08/896,291.94
  6. Step 6: Final answer
    x = 673,978.68

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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.