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Finding the Fourth Proportional to 664,477.80, 997,062.30 and 290,538.60

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Solution

The fourth proportional to 664,477.80, 997,062.30 and 290,538.60 is: 435,959.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,477.80 : 997,062.30 = 290,538.60 : x
  2. Step 2: Convert to fraction form
    664,477.80/997,062.30 = 290,538.60/x
  3. Step 3: Cross multiply
    664,477.80x = 997,062.30 × 290,538.60
  4. Step 4: Simplify right side
    664,477.80x = 289,685,084,754.78
  5. Step 5: Solve for x
    x = 289,685,084,754.78/664,477.80
  6. Step 6: Final answer
    x = 435,959.01

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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.