Home / 459,623.62-689,440.28-139,827.57

Finding the Fourth Proportional to 459,623.62, 689,440.28 and 139,827.57

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Solution

The fourth proportional to 459,623.62, 689,440.28 and 139,827.57 is: 209,742.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,623.62 : 689,440.28 = 139,827.57 : x
  2. Step 2: Convert to fraction form
    459,623.62/689,440.28 = 139,827.57/x
  3. Step 3: Cross multiply
    459,623.62x = 689,440.28 × 139,827.57
  4. Step 4: Simplify right side
    459,623.62x = 96,402,756,907.78
  5. Step 5: Solve for x
    x = 96,402,756,907.78/459,623.62
  6. Step 6: Final answer
    x = 209,742.83

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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.