Home / 2,157,771.51-2,977,710-1,190,901.78

Finding the Fourth Proportional to 2,157,771.51, 2,977,710 and 1,190,901.78

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Solution

The fourth proportional to 2,157,771.51, 2,977,710 and 1,190,901.78 is: 1,643,436.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,771.51 : 2,977,710 = 1,190,901.78 : x
  2. Step 2: Convert to fraction form
    2,157,771.51/2,977,710 = 1,190,901.78/x
  3. Step 3: Cross multiply
    2,157,771.51x = 2,977,710 × 1,190,901.78
  4. Step 4: Simplify right side
    2,157,771.51x = 3,546,160,139,323.80
  5. Step 5: Solve for x
    x = 3,546,160,139,323.80/2,157,771.51
  6. Step 6: Final answer
    x = 1,643,436.35

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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.