Home / 1,279,570.37-1,920,831.75-649,812.78

Finding the Fourth Proportional to 1,279,570.37, 1,920,831.75 and 649,812.78

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Solution

The fourth proportional to 1,279,570.37, 1,920,831.75 and 649,812.78 is: 975,468.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,570.37 : 1,920,831.75 = 649,812.78 : x
  2. Step 2: Convert to fraction form
    1,279,570.37/1,920,831.75 = 649,812.78/x
  3. Step 3: Cross multiply
    1,279,570.37x = 1,920,831.75 × 649,812.78
  4. Step 4: Simplify right side
    1,279,570.37x = 1,248,181,019,379.77
  5. Step 5: Solve for x
    x = 1,248,181,019,379.77/1,279,570.37
  6. Step 6: Final answer
    x = 975,468.84

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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.