Home / 1,990,420.80-2,985,631.20-995,092.80

Finding the Fourth Proportional to 1,990,420.80, 2,985,631.20 and 995,092.80

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Solution

The fourth proportional to 1,990,420.80, 2,985,631.20 and 995,092.80 is: 1,492,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,420.80 : 2,985,631.20 = 995,092.80 : x
  2. Step 2: Convert to fraction form
    1,990,420.80/2,985,631.20 = 995,092.80/x
  3. Step 3: Cross multiply
    1,990,420.80x = 2,985,631.20 × 995,092.80
  4. Step 4: Simplify right side
    1,990,420.80x = 2,970,980,110,575.36
  5. Step 5: Solve for x
    x = 2,970,980,110,575.36/1,990,420.80
  6. Step 6: Final answer
    x = 1,492,639.20

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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.