Home / 1,212,508.65-1,818,762.86-680,071.20

Finding the Fourth Proportional to 1,212,508.65, 1,818,762.86 and 680,071.20

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Solution

The fourth proportional to 1,212,508.65, 1,818,762.86 and 680,071.20 is: 1,020,106.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,508.65 : 1,818,762.86 = 680,071.20 : x
  2. Step 2: Convert to fraction form
    1,212,508.65/1,818,762.86 = 680,071.20/x
  3. Step 3: Cross multiply
    1,212,508.65x = 1,818,762.86 × 680,071.20
  4. Step 4: Simplify right side
    1,212,508.65x = 1,236,888,237,315.28
  5. Step 5: Solve for x
    x = 1,236,888,237,315.28/1,212,508.65
  6. Step 6: Final answer
    x = 1,020,106.73

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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.