Home / 1,433,592.54-1,978,357.91-780,221.03

Finding the Fourth Proportional to 1,433,592.54, 1,978,357.91 and 780,221.03

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Solution

The fourth proportional to 1,433,592.54, 1,978,357.91 and 780,221.03 is: 1,076,705.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,592.54 : 1,978,357.91 = 780,221.03 : x
  2. Step 2: Convert to fraction form
    1,433,592.54/1,978,357.91 = 780,221.03/x
  3. Step 3: Cross multiply
    1,433,592.54x = 1,978,357.91 × 780,221.03
  4. Step 4: Simplify right side
    1,433,592.54x = 1,543,556,432,455.95
  5. Step 5: Solve for x
    x = 1,543,556,432,455.95/1,433,592.54
  6. Step 6: Final answer
    x = 1,076,705.12

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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.