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Finding the Fourth Proportional to 705,990.74, 974,273.62 and 383,701.61

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Solution

The fourth proportional to 705,990.74, 974,273.62 and 383,701.61 is: 529,511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,990.74 : 974,273.62 = 383,701.61 : x
  2. Step 2: Convert to fraction form
    705,990.74/974,273.62 = 383,701.61/x
  3. Step 3: Cross multiply
    705,990.74x = 974,273.62 × 383,701.61
  4. Step 4: Simplify right side
    705,990.74x = 373,830,350,743.91
  5. Step 5: Solve for x
    x = 373,830,350,743.91/705,990.74
  6. Step 6: Final answer
    x = 529,511.69

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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.