Home / 686,241.77-1,029,071.03-281,155.10

Finding the Fourth Proportional to 686,241.77, 1,029,071.03 and 281,155.10

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Solution

The fourth proportional to 686,241.77, 1,029,071.03 and 281,155.10 is: 421,613.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,241.77 : 1,029,071.03 = 281,155.10 : x
  2. Step 2: Convert to fraction form
    686,241.77/1,029,071.03 = 281,155.10/x
  3. Step 3: Cross multiply
    686,241.77x = 1,029,071.03 × 281,155.10
  4. Step 4: Simplify right side
    686,241.77x = 289,328,561,795.62
  5. Step 5: Solve for x
    x = 289,328,561,795.62/686,241.77
  6. Step 6: Final answer
    x = 421,613.16

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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.