Home / 1,211,636.88-1,671,990.80-667,771.02

Finding the Fourth Proportional to 1,211,636.88, 1,671,990.80 and 667,771.02

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Solution

The fourth proportional to 1,211,636.88, 1,671,990.80 and 667,771.02 is: 921,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,636.88 : 1,671,990.80 = 667,771.02 : x
  2. Step 2: Convert to fraction form
    1,211,636.88/1,671,990.80 = 667,771.02/x
  3. Step 3: Cross multiply
    1,211,636.88x = 1,671,990.80 × 667,771.02
  4. Step 4: Simplify right side
    1,211,636.88x = 1,116,506,998,607.76
  5. Step 5: Solve for x
    x = 1,116,506,998,607.76/1,211,636.88
  6. Step 6: Final answer
    x = 921,486.48

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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.