Home / 628,448,831.55-867,194,144.75-387,006,424.76

Finding the Fourth Proportional to 628,448,831.55, 867,194,144.75 and 387,006,424.76

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Solution

The fourth proportional to 628,448,831.55, 867,194,144.75 and 387,006,424.76 is: 534,028,688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,448,831.55 : 867,194,144.75 = 387,006,424.76 : x
  2. Step 2: Convert to fraction form
    628,448,831.55/867,194,144.75 = 387,006,424.76/x
  3. Step 3: Cross multiply
    628,448,831.55x = 867,194,144.75 × 387,006,424.76
  4. Step 4: Simplify right side
    628,448,831.55x = 335,609,705,535,638,912
  5. Step 5: Solve for x
    x = 335,609,705,535,638,912/628,448,831.55
  6. Step 6: Final answer
    x = 534,028,688.87

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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.