Home / 1,389,015.40-2,083,134.30-442,676.20

Finding the Fourth Proportional to 1,389,015.40, 2,083,134.30 and 442,676.20

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Solution

The fourth proportional to 1,389,015.40, 2,083,134.30 and 442,676.20 is: 663,890.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,015.40 : 2,083,134.30 = 442,676.20 : x
  2. Step 2: Convert to fraction form
    1,389,015.40/2,083,134.30 = 442,676.20/x
  3. Step 3: Cross multiply
    1,389,015.40x = 2,083,134.30 × 442,676.20
  4. Step 4: Simplify right side
    1,389,015.40x = 922,153,976,013.66
  5. Step 5: Solve for x
    x = 922,153,976,013.66/1,389,015.40
  6. Step 6: Final answer
    x = 663,890.39

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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.