Home / 1,078,976-1,618,541.76-414,128

Finding the Fourth Proportional to 1,078,976, 1,618,541.76 and 414,128

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Solution

The fourth proportional to 1,078,976, 1,618,541.76 and 414,128 is: 621,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,976 : 1,618,541.76 = 414,128 : x
  2. Step 2: Convert to fraction form
    1,078,976/1,618,541.76 = 414,128/x
  3. Step 3: Cross multiply
    1,078,976x = 1,618,541.76 × 414,128
  4. Step 4: Simplify right side
    1,078,976x = 670,283,461,985.28
  5. Step 5: Solve for x
    x = 670,283,461,985.28/1,078,976
  6. Step 6: Final answer
    x = 621,221.85

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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.