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Finding the Fourth Proportional to 580,315.51, 870,719.28 and 281,019.09

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Solution

The fourth proportional to 580,315.51, 870,719.28 and 281,019.09 is: 421,647.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,315.51 : 870,719.28 = 281,019.09 : x
  2. Step 2: Convert to fraction form
    580,315.51/870,719.28 = 281,019.09/x
  3. Step 3: Cross multiply
    580,315.51x = 870,719.28 × 281,019.09
  4. Step 4: Simplify right side
    580,315.51x = 244,688,739,711.06
  5. Step 5: Solve for x
    x = 244,688,739,711.06/580,315.51
  6. Step 6: Final answer
    x = 421,647.77

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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.