Home / 1,980,256.19-2,731,874.34-1,291,769.45

Finding the Fourth Proportional to 1,980,256.19, 2,731,874.34 and 1,291,769.45

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Solution

The fourth proportional to 1,980,256.19, 2,731,874.34 and 1,291,769.45 is: 1,782,068.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,256.19 : 2,731,874.34 = 1,291,769.45 : x
  2. Step 2: Convert to fraction form
    1,980,256.19/2,731,874.34 = 1,291,769.45/x
  3. Step 3: Cross multiply
    1,980,256.19x = 2,731,874.34 × 1,291,769.45
  4. Step 4: Simplify right side
    1,980,256.19x = 3,528,951,830,447.00
  5. Step 5: Solve for x
    x = 3,528,951,830,447.00/1,980,256.19
  6. Step 6: Final answer
    x = 1,782,068.32

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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.