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Finding the Fourth Proportional to 1,078,833, 1,618,327.26 and 413,985

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Solution

The fourth proportional to 1,078,833, 1,618,327.26 and 413,985 is: 621,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,833 : 1,618,327.26 = 413,985 : x
  2. Step 2: Convert to fraction form
    1,078,833/1,618,327.26 = 413,985/x
  3. Step 3: Cross multiply
    1,078,833x = 1,618,327.26 × 413,985
  4. Step 4: Simplify right side
    1,078,833x = 669,963,210,731.10
  5. Step 5: Solve for x
    x = 669,963,210,731.10/1,078,833
  6. Step 6: Final answer
    x = 621,007.34

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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.