Home / 870,539.20-1,305,020.94-309,442.48

Finding the Fourth Proportional to 870,539.20, 1,305,020.94 and 309,442.48

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Solution

The fourth proportional to 870,539.20, 1,305,020.94 and 309,442.48 is: 463,883.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,539.20 : 1,305,020.94 = 309,442.48 : x
  2. Step 2: Convert to fraction form
    870,539.20/1,305,020.94 = 309,442.48/x
  3. Step 3: Cross multiply
    870,539.20x = 1,305,020.94 × 309,442.48
  4. Step 4: Simplify right side
    870,539.20x = 403,828,916,125.53
  5. Step 5: Solve for x
    x = 403,828,916,125.53/870,539.20
  6. Step 6: Final answer
    x = 463,883.67

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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.