Home / 668,648.90-1,003,126.34-289,632.74

Finding the Fourth Proportional to 668,648.90, 1,003,126.34 and 289,632.74

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Solution

The fourth proportional to 668,648.90, 1,003,126.34 and 289,632.74 is: 434,515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,648.90 : 1,003,126.34 = 289,632.74 : x
  2. Step 2: Convert to fraction form
    668,648.90/1,003,126.34 = 289,632.74/x
  3. Step 3: Cross multiply
    668,648.90x = 1,003,126.34 × 289,632.74
  4. Step 4: Simplify right side
    668,648.90x = 290,538,230,420.37
  5. Step 5: Solve for x
    x = 290,538,230,420.37/668,648.90
  6. Step 6: Final answer
    x = 434,515.38

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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.