Home / 1,078,836-1,618,331.76-413,988

Finding the Fourth Proportional to 1,078,836, 1,618,331.76 and 413,988

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Solution

The fourth proportional to 1,078,836, 1,618,331.76 and 413,988 is: 621,011.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,836 : 1,618,331.76 = 413,988 : x
  2. Step 2: Convert to fraction form
    1,078,836/1,618,331.76 = 413,988/x
  3. Step 3: Cross multiply
    1,078,836x = 1,618,331.76 × 413,988
  4. Step 4: Simplify right side
    1,078,836x = 669,969,928,658.88
  5. Step 5: Solve for x
    x = 669,969,928,658.88/1,078,836
  6. Step 6: Final answer
    x = 621,011.84

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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.