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Finding the Fourth Proportional to 641,374.83, 885,060.41 and 354,880.53

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Solution

The fourth proportional to 641,374.83, 885,060.41 and 354,880.53 is: 489,714.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,374.83 : 885,060.41 = 354,880.53 : x
  2. Step 2: Convert to fraction form
    641,374.83/885,060.41 = 354,880.53/x
  3. Step 3: Cross multiply
    641,374.83x = 885,060.41 × 354,880.53
  4. Step 4: Simplify right side
    641,374.83x = 314,090,705,608.42
  5. Step 5: Solve for x
    x = 314,090,705,608.42/641,374.83
  6. Step 6: Final answer
    x = 489,714.74

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1.5x scale

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.