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Finding the Fourth Proportional to 608,831.46, 839,499.86 and 455,377.87

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Solution

The fourth proportional to 608,831.46, 839,499.86 and 455,377.87 is: 627,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,831.46 : 839,499.86 = 455,377.87 : x
  2. Step 2: Convert to fraction form
    608,831.46/839,499.86 = 455,377.87/x
  3. Step 3: Cross multiply
    608,831.46x = 839,499.86 × 455,377.87
  4. Step 4: Simplify right side
    608,831.46x = 382,289,661,876.87
  5. Step 5: Solve for x
    x = 382,289,661,876.87/608,831.46
  6. Step 6: Final answer
    x = 627,907.21

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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.