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Finding the Fourth Proportional to 634,148.80, 874,661.70 and 404,863.72

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Solution

The fourth proportional to 634,148.80, 874,661.70 and 404,863.72 is: 558,415.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,148.80 : 874,661.70 = 404,863.72 : x
  2. Step 2: Convert to fraction form
    634,148.80/874,661.70 = 404,863.72/x
  3. Step 3: Cross multiply
    634,148.80x = 874,661.70 × 404,863.72
  4. Step 4: Simplify right side
    634,148.80x = 354,118,789,603.52
  5. Step 5: Solve for x
    x = 354,118,789,603.52/634,148.80
  6. Step 6: Final answer
    x = 558,415.93

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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.