Home / 1,389,117.60-2,083,676.40-679,600.80

Finding the Fourth Proportional to 1,389,117.60, 2,083,676.40 and 679,600.80

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Solution

The fourth proportional to 1,389,117.60, 2,083,676.40 and 679,600.80 is: 1,019,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,117.60 : 2,083,676.40 = 679,600.80 : x
  2. Step 2: Convert to fraction form
    1,389,117.60/2,083,676.40 = 679,600.80/x
  3. Step 3: Cross multiply
    1,389,117.60x = 2,083,676.40 × 679,600.80
  4. Step 4: Simplify right side
    1,389,117.60x = 1,416,068,148,381.12
  5. Step 5: Solve for x
    x = 1,416,068,148,381.12/1,389,117.60
  6. Step 6: Final answer
    x = 1,019,401.20

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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.