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Finding the Fourth Proportional to 637,269.12, 879,435.36 and 350,781.84

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Solution

The fourth proportional to 637,269.12, 879,435.36 and 350,781.84 is: 484,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,269.12 : 879,435.36 = 350,781.84 : x
  2. Step 2: Convert to fraction form
    637,269.12/879,435.36 = 350,781.84/x
  3. Step 3: Cross multiply
    637,269.12x = 879,435.36 × 350,781.84
  4. Step 4: Simplify right side
    637,269.12x = 308,489,953,741.86
  5. Step 5: Solve for x
    x = 308,489,953,741.86/637,269.12
  6. Step 6: Final answer
    x = 484,081.13

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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.