Home / 685,777.15-1,028,762.10-286,327.06

Finding the Fourth Proportional to 685,777.15, 1,028,762.10 and 286,327.06

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Solution

The fourth proportional to 685,777.15, 1,028,762.10 and 286,327.06 is: 429,530.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,777.15 : 1,028,762.10 = 286,327.06 : x
  2. Step 2: Convert to fraction form
    685,777.15/1,028,762.10 = 286,327.06/x
  3. Step 3: Cross multiply
    685,777.15x = 1,028,762.10 × 286,327.06
  4. Step 4: Simplify right side
    685,777.15x = 294,562,427,532.43
  5. Step 5: Solve for x
    x = 294,562,427,532.43/685,777.15
  6. Step 6: Final answer
    x = 429,530.83

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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.