Home / 1,222,256.34-1,686,701.56-678,378.14

Finding the Fourth Proportional to 1,222,256.34, 1,686,701.56 and 678,378.14

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Solution

The fourth proportional to 1,222,256.34, 1,686,701.56 and 678,378.14 is: 936,155.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,256.34 : 1,686,701.56 = 678,378.14 : x
  2. Step 2: Convert to fraction form
    1,222,256.34/1,686,701.56 = 678,378.14/x
  3. Step 3: Cross multiply
    1,222,256.34x = 1,686,701.56 × 678,378.14
  4. Step 4: Simplify right side
    1,222,256.34x = 1,144,221,467,007.90
  5. Step 5: Solve for x
    x = 1,144,221,467,007.90/1,222,256.34
  6. Step 6: Final answer
    x = 936,155.07

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1.5x scale

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.