Home / 1,247,986.76-1,870,831.96-678,535.70

Finding the Fourth Proportional to 1,247,986.76, 1,870,831.96 and 678,535.70

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Solution

The fourth proportional to 1,247,986.76, 1,870,831.96 and 678,535.70 is: 1,017,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,986.76 : 1,870,831.96 = 678,535.70 : x
  2. Step 2: Convert to fraction form
    1,247,986.76/1,870,831.96 = 678,535.70/x
  3. Step 3: Cross multiply
    1,247,986.76x = 1,870,831.96 × 678,535.70
  4. Step 4: Simplify right side
    1,247,986.76x = 1,269,426,262,510.47
  5. Step 5: Solve for x
    x = 1,269,426,262,510.47/1,247,986.76
  6. Step 6: Final answer
    x = 1,017,179.27

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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.