Home / 1,284,742.20-1,925,111.70-485,587.80

Finding the Fourth Proportional to 1,284,742.20, 1,925,111.70 and 485,587.80

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Solution

The fourth proportional to 1,284,742.20, 1,925,111.70 and 485,587.80 is: 727,625.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,742.20 : 1,925,111.70 = 485,587.80 : x
  2. Step 2: Convert to fraction form
    1,284,742.20/1,925,111.70 = 485,587.80/x
  3. Step 3: Cross multiply
    1,284,742.20x = 1,925,111.70 × 485,587.80
  4. Step 4: Simplify right side
    1,284,742.20x = 934,810,755,157.26
  5. Step 5: Solve for x
    x = 934,810,755,157.26/1,284,742.20
  6. Step 6: Final answer
    x = 727,625.16

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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.