Home / 1,397,821.56-1,929,152.55-777,688.07

Finding the Fourth Proportional to 1,397,821.56, 1,929,152.55 and 777,688.07

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Solution

The fourth proportional to 1,397,821.56, 1,929,152.55 and 777,688.07 is: 1,073,297.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,821.56 : 1,929,152.55 = 777,688.07 : x
  2. Step 2: Convert to fraction form
    1,397,821.56/1,929,152.55 = 777,688.07/x
  3. Step 3: Cross multiply
    1,397,821.56x = 1,929,152.55 × 777,688.07
  4. Step 4: Simplify right side
    1,397,821.56x = 1,500,278,913,699.32
  5. Step 5: Solve for x
    x = 1,500,278,913,699.32/1,397,821.56
  6. Step 6: Final answer
    x = 1,073,297.88

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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.