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Finding the Fourth Proportional to 1,985,300.04, 2,978,474.88 and 1,038,416.52

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Solution

The fourth proportional to 1,985,300.04, 2,978,474.88 and 1,038,416.52 is: 1,557,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,300.04 : 2,978,474.88 = 1,038,416.52 : x
  2. Step 2: Convert to fraction form
    1,985,300.04/2,978,474.88 = 1,038,416.52/x
  3. Step 3: Cross multiply
    1,985,300.04x = 2,978,474.88 × 1,038,416.52
  4. Step 4: Simplify right side
    1,985,300.04x = 3,092,897,519,797.02
  5. Step 5: Solve for x
    x = 3,092,897,519,797.02/1,985,300.04
  6. Step 6: Final answer
    x = 1,557,899.29

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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.