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Finding the Fourth Proportional to 885,902.40, 1,328,594.40 and 317,217.60

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Solution

The fourth proportional to 885,902.40, 1,328,594.40 and 317,217.60 is: 475,733.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,902.40 : 1,328,594.40 = 317,217.60 : x
  2. Step 2: Convert to fraction form
    885,902.40/1,328,594.40 = 317,217.60/x
  3. Step 3: Cross multiply
    885,902.40x = 1,328,594.40 × 317,217.60
  4. Step 4: Simplify right side
    885,902.40x = 421,453,526,941.44
  5. Step 5: Solve for x
    x = 421,453,526,941.44/885,902.40
  6. Step 6: Final answer
    x = 475,733.59

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Double scale
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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.