Home / 1,420,430.54-1,960,181.15-775,850.54

Finding the Fourth Proportional to 1,420,430.54, 1,960,181.15 and 775,850.54

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Solution

The fourth proportional to 1,420,430.54, 1,960,181.15 and 775,850.54 is: 1,070,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,430.54 : 1,960,181.15 = 775,850.54 : x
  2. Step 2: Convert to fraction form
    1,420,430.54/1,960,181.15 = 775,850.54/x
  3. Step 3: Cross multiply
    1,420,430.54x = 1,960,181.15 × 775,850.54
  4. Step 4: Simplify right side
    1,420,430.54x = 1,520,807,590,045.16
  5. Step 5: Solve for x
    x = 1,520,807,590,045.16/1,420,430.54
  6. Step 6: Final answer
    x = 1,070,666.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.