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Finding the Fourth Proportional to 641,335.93, 885,006.61 and 354,838.93

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Solution

The fourth proportional to 641,335.93, 885,006.61 and 354,838.93 is: 489,657.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,335.93 : 885,006.61 = 354,838.93 : x
  2. Step 2: Convert to fraction form
    641,335.93/885,006.61 = 354,838.93/x
  3. Step 3: Cross multiply
    641,335.93x = 885,006.61 × 354,838.93
  4. Step 4: Simplify right side
    641,335.93x = 314,034,795,435.71
  5. Step 5: Solve for x
    x = 314,034,795,435.71/641,335.93
  6. Step 6: Final answer
    x = 489,657.26

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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.