Home / 1,290,374.36-1,780,714.04-739,268.55

Finding the Fourth Proportional to 1,290,374.36, 1,780,714.04 and 739,268.55

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Solution

The fourth proportional to 1,290,374.36, 1,780,714.04 and 739,268.55 is: 1,020,189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,374.36 : 1,780,714.04 = 739,268.55 : x
  2. Step 2: Convert to fraction form
    1,290,374.36/1,780,714.04 = 739,268.55/x
  3. Step 3: Cross multiply
    1,290,374.36x = 1,780,714.04 × 739,268.55
  4. Step 4: Simplify right side
    1,290,374.36x = 1,316,425,886,315.44
  5. Step 5: Solve for x
    x = 1,316,425,886,315.44/1,290,374.36
  6. Step 6: Final answer
    x = 1,020,189.12

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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.