Home / 459,786.48-689,778.98-139,963.35

Finding the Fourth Proportional to 459,786.48, 689,778.98 and 139,963.35

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Solution

The fourth proportional to 459,786.48, 689,778.98 and 139,963.35 is: 209,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,786.48 : 689,778.98 = 139,963.35 : x
  2. Step 2: Convert to fraction form
    459,786.48/689,778.98 = 139,963.35/x
  3. Step 3: Cross multiply
    459,786.48x = 689,778.98 × 139,963.35
  4. Step 4: Simplify right side
    459,786.48x = 96,543,776,800.38
  5. Step 5: Solve for x
    x = 96,543,776,800.38/459,786.48
  6. Step 6: Final answer
    x = 209,975.24

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1.5x scale

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.