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Finding the Fourth Proportional to 1,230,350.10, 1,845,784.35 and 388,986.90

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Solution

The fourth proportional to 1,230,350.10, 1,845,784.35 and 388,986.90 is: 583,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,350.10 : 1,845,784.35 = 388,986.90 : x
  2. Step 2: Convert to fraction form
    1,230,350.10/1,845,784.35 = 388,986.90/x
  3. Step 3: Cross multiply
    1,230,350.10x = 1,845,784.35 × 388,986.90
  4. Step 4: Simplify right side
    1,230,350.10x = 717,985,932,375.02
  5. Step 5: Solve for x
    x = 717,985,932,375.02/1,230,350.10
  6. Step 6: Final answer
    x = 583,562.30

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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.