Home / 1,212,303.78-1,672,990.54-668,459.05

Finding the Fourth Proportional to 1,212,303.78, 1,672,990.54 and 668,459.05

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Solution

The fourth proportional to 1,212,303.78, 1,672,990.54 and 668,459.05 is: 922,479.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,303.78 : 1,672,990.54 = 668,459.05 : x
  2. Step 2: Convert to fraction form
    1,212,303.78/1,672,990.54 = 668,459.05/x
  3. Step 3: Cross multiply
    1,212,303.78x = 1,672,990.54 × 668,459.05
  4. Step 4: Simplify right side
    1,212,303.78x = 1,118,325,661,173.76
  5. Step 5: Solve for x
    x = 1,118,325,661,173.76/1,212,303.78
  6. Step 6: Final answer
    x = 922,479.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.