Home / 1,214,913.40-1,822,370.10-931,478.20

Finding the Fourth Proportional to 1,214,913.40, 1,822,370.10 and 931,478.20

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Solution

The fourth proportional to 1,214,913.40, 1,822,370.10 and 931,478.20 is: 1,397,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,913.40 : 1,822,370.10 = 931,478.20 : x
  2. Step 2: Convert to fraction form
    1,214,913.40/1,822,370.10 = 931,478.20/x
  3. Step 3: Cross multiply
    1,214,913.40x = 1,822,370.10 × 931,478.20
  4. Step 4: Simplify right side
    1,214,913.40x = 1,697,498,020,481.82
  5. Step 5: Solve for x
    x = 1,697,498,020,481.82/1,214,913.40
  6. Step 6: Final answer
    x = 1,397,217.30

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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.