Home / 1,515,405.65-2,091,530.72-903,597.80

Finding the Fourth Proportional to 1,515,405.65, 2,091,530.72 and 903,597.80

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Solution

The fourth proportional to 1,515,405.65, 2,091,530.72 and 903,597.80 is: 1,247,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,405.65 : 2,091,530.72 = 903,597.80 : x
  2. Step 2: Convert to fraction form
    1,515,405.65/2,091,530.72 = 903,597.80/x
  3. Step 3: Cross multiply
    1,515,405.65x = 2,091,530.72 × 903,597.80
  4. Step 4: Simplify right side
    1,515,405.65x = 1,889,902,552,706.43
  5. Step 5: Solve for x
    x = 1,889,902,552,706.43/1,515,405.65
  6. Step 6: Final answer
    x = 1,247,126.51

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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.