Home / 986,985.60-1,481,169.60-426,422.40

Finding the Fourth Proportional to 986,985.60, 1,481,169.60 and 426,422.40

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Solution

The fourth proportional to 986,985.60, 1,481,169.60 and 426,422.40 is: 639,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,985.60 : 1,481,169.60 = 426,422.40 : x
  2. Step 2: Convert to fraction form
    986,985.60/1,481,169.60 = 426,422.40/x
  3. Step 3: Cross multiply
    986,985.60x = 1,481,169.60 × 426,422.40
  4. Step 4: Simplify right side
    986,985.60x = 631,603,895,639.04
  5. Step 5: Solve for x
    x = 631,603,895,639.04/986,985.60
  6. Step 6: Final answer
    x = 639,932.23

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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.