Home / 1,438,678.80-1,985,424.84-785,343.60

Finding the Fourth Proportional to 1,438,678.80, 1,985,424.84 and 785,343.60

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Solution

The fourth proportional to 1,438,678.80, 1,985,424.84 and 785,343.60 is: 1,083,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,678.80 : 1,985,424.84 = 785,343.60 : x
  2. Step 2: Convert to fraction form
    1,438,678.80/1,985,424.84 = 785,343.60/x
  3. Step 3: Cross multiply
    1,438,678.80x = 1,985,424.84 × 785,343.60
  4. Step 4: Simplify right side
    1,438,678.80x = 1,559,240,691,375.02
  5. Step 5: Solve for x
    x = 1,559,240,691,375.02/1,438,678.80
  6. Step 6: Final answer
    x = 1,083,800.42

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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.