Home / 459,192.20-689,016.78-307,491.08

Finding the Fourth Proportional to 459,192.20, 689,016.78 and 307,491.08

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Solution

The fourth proportional to 459,192.20, 689,016.78 and 307,491.08 is: 461,389.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,192.20 : 689,016.78 = 307,491.08 : x
  2. Step 2: Convert to fraction form
    459,192.20/689,016.78 = 307,491.08/x
  3. Step 3: Cross multiply
    459,192.20x = 689,016.78 × 307,491.08
  4. Step 4: Simplify right side
    459,192.20x = 211,866,513,820.32
  5. Step 5: Solve for x
    x = 211,866,513,820.32/459,192.20
  6. Step 6: Final answer
    x = 461,389.62

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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.