Home / 1,055,415.40-1,580,142.30-821,487.40

Finding the Fourth Proportional to 1,055,415.40, 1,580,142.30 and 821,487.40

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Solution

The fourth proportional to 1,055,415.40, 1,580,142.30 and 821,487.40 is: 1,229,910.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,415.40 : 1,580,142.30 = 821,487.40 : x
  2. Step 2: Convert to fraction form
    1,055,415.40/1,580,142.30 = 821,487.40/x
  3. Step 3: Cross multiply
    1,055,415.40x = 1,580,142.30 × 821,487.40
  4. Step 4: Simplify right side
    1,055,415.40x = 1,298,066,989,657.02
  5. Step 5: Solve for x
    x = 1,298,066,989,657.02/1,055,415.40
  6. Step 6: Final answer
    x = 1,229,910.98

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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.