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Finding the Fourth Proportional to 634,907.46, 876,211.66 and 419,674.26

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Solution

The fourth proportional to 634,907.46, 876,211.66 and 419,674.26 is: 579,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,907.46 : 876,211.66 = 419,674.26 : x
  2. Step 2: Convert to fraction form
    634,907.46/876,211.66 = 419,674.26/x
  3. Step 3: Cross multiply
    634,907.46x = 876,211.66 × 419,674.26
  4. Step 4: Simplify right side
    634,907.46x = 367,723,480,013.87
  5. Step 5: Solve for x
    x = 367,723,480,013.87/634,907.46
  6. Step 6: Final answer
    x = 579,176.50

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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.