Home / 1,989,754.32-2,985,057.96-641,994

Finding the Fourth Proportional to 1,989,754.32, 2,985,057.96 and 641,994

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Solution

The fourth proportional to 1,989,754.32, 2,985,057.96 and 641,994 is: 963,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,754.32 : 2,985,057.96 = 641,994 : x
  2. Step 2: Convert to fraction form
    1,989,754.32/2,985,057.96 = 641,994/x
  3. Step 3: Cross multiply
    1,989,754.32x = 2,985,057.96 × 641,994
  4. Step 4: Simplify right side
    1,989,754.32x = 1,916,389,299,972.24
  5. Step 5: Solve for x
    x = 1,916,389,299,972.24/1,989,754.32
  6. Step 6: Final answer
    x = 963,128.60

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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.