Home / 685,964.80-1,029,056.55-286,399.90

Finding the Fourth Proportional to 685,964.80, 1,029,056.55 and 286,399.90

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Solution

The fourth proportional to 685,964.80, 1,029,056.55 and 286,399.90 is: 429,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,964.80 : 1,029,056.55 = 286,399.90 : x
  2. Step 2: Convert to fraction form
    685,964.80/1,029,056.55 = 286,399.90/x
  3. Step 3: Cross multiply
    685,964.80x = 1,029,056.55 × 286,399.90
  4. Step 4: Simplify right side
    685,964.80x = 294,721,693,014.35
  5. Step 5: Solve for x
    x = 294,721,693,014.35/685,964.80
  6. Step 6: Final answer
    x = 429,645.51

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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.