Home / 1,138,299.42-1,570,831.47-628,990.86

Finding the Fourth Proportional to 1,138,299.42, 1,570,831.47 and 628,990.86

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Solution

The fourth proportional to 1,138,299.42, 1,570,831.47 and 628,990.86 is: 867,995.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,299.42 : 1,570,831.47 = 628,990.86 : x
  2. Step 2: Convert to fraction form
    1,138,299.42/1,570,831.47 = 628,990.86/x
  3. Step 3: Cross multiply
    1,138,299.42x = 1,570,831.47 × 628,990.86
  4. Step 4: Simplify right side
    1,138,299.42x = 988,038,637,230.36
  5. Step 5: Solve for x
    x = 988,038,637,230.36/1,138,299.42
  6. Step 6: Final answer
    x = 867,995.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.