Home / 1,222,275.34-1,686,714.60-678,379.24

Finding the Fourth Proportional to 1,222,275.34, 1,686,714.60 and 678,379.24

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Solution

The fourth proportional to 1,222,275.34, 1,686,714.60 and 678,379.24 is: 936,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,275.34 : 1,686,714.60 = 678,379.24 : x
  2. Step 2: Convert to fraction form
    1,222,275.34/1,686,714.60 = 678,379.24/x
  3. Step 3: Cross multiply
    1,222,275.34x = 1,686,714.60 × 678,379.24
  4. Step 4: Simplify right side
    1,222,275.34x = 1,144,232,168,444.90
  5. Step 5: Solve for x
    x = 1,144,232,168,444.90/1,222,275.34
  6. Step 6: Final answer
    x = 936,149.27

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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.