Home / 685,967.87-1,028,952.21-286,390.82

Finding the Fourth Proportional to 685,967.87, 1,028,952.21 and 286,390.82

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Solution

The fourth proportional to 685,967.87, 1,028,952.21 and 286,390.82 is: 429,586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,967.87 : 1,028,952.21 = 286,390.82 : x
  2. Step 2: Convert to fraction form
    685,967.87/1,028,952.21 = 286,390.82/x
  3. Step 3: Cross multiply
    685,967.87x = 1,028,952.21 × 286,390.82
  4. Step 4: Simplify right side
    685,967.87x = 294,682,467,162.71
  5. Step 5: Solve for x
    x = 294,682,467,162.71/685,967.87
  6. Step 6: Final answer
    x = 429,586.40

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1.5x scale

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.