Home / 879,079.80-1,318,619.70-288,103.80

Finding the Fourth Proportional to 879,079.80, 1,318,619.70 and 288,103.80

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Solution

The fourth proportional to 879,079.80, 1,318,619.70 and 288,103.80 is: 432,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,079.80 : 1,318,619.70 = 288,103.80 : x
  2. Step 2: Convert to fraction form
    879,079.80/1,318,619.70 = 288,103.80/x
  3. Step 3: Cross multiply
    879,079.80x = 1,318,619.70 × 288,103.80
  4. Step 4: Simplify right side
    879,079.80x = 379,899,346,324.86
  5. Step 5: Solve for x
    x = 379,899,346,324.86/879,079.80
  6. Step 6: Final answer
    x = 432,155.70

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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.