Home / 856,926.90-1,285,502.16-317,109.72

Finding the Fourth Proportional to 856,926.90, 1,285,502.16 and 317,109.72

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Solution

The fourth proportional to 856,926.90, 1,285,502.16 and 317,109.72 is: 475,705.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,926.90 : 1,285,502.16 = 317,109.72 : x
  2. Step 2: Convert to fraction form
    856,926.90/1,285,502.16 = 317,109.72/x
  3. Step 3: Cross multiply
    856,926.90x = 1,285,502.16 × 317,109.72
  4. Step 4: Simplify right side
    856,926.90x = 407,645,230,017.00
  5. Step 5: Solve for x
    x = 407,645,230,017.00/856,926.90
  6. Step 6: Final answer
    x = 475,705.96

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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.