Home / 668,646.90-1,003,123.34-289,630.73

Finding the Fourth Proportional to 668,646.90, 1,003,123.34 and 289,630.73

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Solution

The fourth proportional to 668,646.90, 1,003,123.34 and 289,630.73 is: 434,512.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,646.90 : 1,003,123.34 = 289,630.73 : x
  2. Step 2: Convert to fraction form
    668,646.90/1,003,123.34 = 289,630.73/x
  3. Step 3: Cross multiply
    668,646.90x = 1,003,123.34 × 289,630.73
  4. Step 4: Simplify right side
    668,646.90x = 290,535,347,390.01
  5. Step 5: Solve for x
    x = 290,535,347,390.01/668,646.90
  6. Step 6: Final answer
    x = 434,512.37

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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.