Home / 1,230,500.80-1,845,405.60-389,310.40

Finding the Fourth Proportional to 1,230,500.80, 1,845,405.60 and 389,310.40

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Solution

The fourth proportional to 1,230,500.80, 1,845,405.60 and 389,310.40 is: 583,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,500.80 : 1,845,405.60 = 389,310.40 : x
  2. Step 2: Convert to fraction form
    1,230,500.80/1,845,405.60 = 389,310.40/x
  3. Step 3: Cross multiply
    1,230,500.80x = 1,845,405.60 × 389,310.40
  4. Step 4: Simplify right side
    1,230,500.80x = 718,435,592,298.24
  5. Step 5: Solve for x
    x = 718,435,592,298.24/1,230,500.80
  6. Step 6: Final answer
    x = 583,856.26

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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.