Home / 668,979.45-1,003,622.40-289,963.80

Finding the Fourth Proportional to 668,979.45, 1,003,622.40 and 289,963.80

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Solution

The fourth proportional to 668,979.45, 1,003,622.40 and 289,963.80 is: 435,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,979.45 : 1,003,622.40 = 289,963.80 : x
  2. Step 2: Convert to fraction form
    668,979.45/1,003,622.40 = 289,963.80/x
  3. Step 3: Cross multiply
    668,979.45x = 1,003,622.40 × 289,963.80
  4. Step 4: Simplify right side
    668,979.45x = 291,014,164,869.12
  5. Step 5: Solve for x
    x = 291,014,164,869.12/668,979.45
  6. Step 6: Final answer
    x = 435,012.11

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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.