Home / 459,015.68-689,686-290,615.18

Finding the Fourth Proportional to 459,015.68, 689,686 and 290,615.18

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Solution

The fourth proportional to 459,015.68, 689,686 and 290,615.18 is: 436,658.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,015.68 : 689,686 = 290,615.18 : x
  2. Step 2: Convert to fraction form
    459,015.68/689,686 = 290,615.18/x
  3. Step 3: Cross multiply
    459,015.68x = 689,686 × 290,615.18
  4. Step 4: Simplify right side
    459,015.68x = 200,433,221,033.48
  5. Step 5: Solve for x
    x = 200,433,221,033.48/459,015.68
  6. Step 6: Final answer
    x = 436,658.77

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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.