Home / 1,423,986.78-2,135,708.01-426,714.78

Finding the Fourth Proportional to 1,423,986.78, 2,135,708.01 and 426,714.78

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Solution

The fourth proportional to 1,423,986.78, 2,135,708.01 and 426,714.78 is: 639,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,986.78 : 2,135,708.01 = 426,714.78 : x
  2. Step 2: Convert to fraction form
    1,423,986.78/2,135,708.01 = 426,714.78/x
  3. Step 3: Cross multiply
    1,423,986.78x = 2,135,708.01 × 426,714.78
  4. Step 4: Simplify right side
    1,423,986.78x = 911,338,173,631.39
  5. Step 5: Solve for x
    x = 911,338,173,631.39/1,423,986.78
  6. Step 6: Final answer
    x = 639,990.61

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1.5x scale

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.