Home / 1,222,292.16-1,686,757.32-678,434.40

Finding the Fourth Proportional to 1,222,292.16, 1,686,757.32 and 678,434.40

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Solution

The fourth proportional to 1,222,292.16, 1,686,757.32 and 678,434.40 is: 936,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,292.16 : 1,686,757.32 = 678,434.40 : x
  2. Step 2: Convert to fraction form
    1,222,292.16/1,686,757.32 = 678,434.40/x
  3. Step 3: Cross multiply
    1,222,292.16x = 1,686,757.32 × 678,434.40
  4. Step 4: Simplify right side
    1,222,292.16x = 1,144,354,190,339.81
  5. Step 5: Solve for x
    x = 1,144,354,190,339.81/1,222,292.16
  6. Step 6: Final answer
    x = 936,236.22

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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.