Home / 2,129,061.78-2,938,002.84-1,211,204.70

Finding the Fourth Proportional to 2,129,061.78, 2,938,002.84 and 1,211,204.70

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Solution

The fourth proportional to 2,129,061.78, 2,938,002.84 and 1,211,204.70 is: 1,671,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,061.78 : 2,938,002.84 = 1,211,204.70 : x
  2. Step 2: Convert to fraction form
    2,129,061.78/2,938,002.84 = 1,211,204.70/x
  3. Step 3: Cross multiply
    2,129,061.78x = 2,938,002.84 × 1,211,204.70
  4. Step 4: Simplify right side
    2,129,061.78x = 3,558,522,848,421.35
  5. Step 5: Solve for x
    x = 3,558,522,848,421.35/2,129,061.78
  6. Step 6: Final answer
    x = 1,671,404.22

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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.