Home / 1,421,331.60-2,131,997.40-1,327,328.40

Finding the Fourth Proportional to 1,421,331.60, 2,131,997.40 and 1,327,328.40

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Solution

The fourth proportional to 1,421,331.60, 2,131,997.40 and 1,327,328.40 is: 1,990,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,331.60 : 2,131,997.40 = 1,327,328.40 : x
  2. Step 2: Convert to fraction form
    1,421,331.60/2,131,997.40 = 1,327,328.40/x
  3. Step 3: Cross multiply
    1,421,331.60x = 2,131,997.40 × 1,327,328.40
  4. Step 4: Simplify right side
    1,421,331.60x = 2,829,860,697,746.16
  5. Step 5: Solve for x
    x = 2,829,860,697,746.16/1,421,331.60
  6. Step 6: Final answer
    x = 1,990,992.60

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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.