Home / 1,290,878.44-1,935,988.62-915,326.80

Finding the Fourth Proportional to 1,290,878.44, 1,935,988.62 and 915,326.80

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Solution

The fourth proportional to 1,290,878.44, 1,935,988.62 and 915,326.80 is: 1,372,756.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,878.44 : 1,935,988.62 = 915,326.80 : x
  2. Step 2: Convert to fraction form
    1,290,878.44/1,935,988.62 = 915,326.80/x
  3. Step 3: Cross multiply
    1,290,878.44x = 1,935,988.62 × 915,326.80
  4. Step 4: Simplify right side
    1,290,878.44x = 1,772,062,268,381.02
  5. Step 5: Solve for x
    x = 1,772,062,268,381.02/1,290,878.44
  6. Step 6: Final answer
    x = 1,372,756.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.