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Finding the Fourth Proportional to 640,970.82, 884,534.58 and 354,483.54

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Solution

The fourth proportional to 640,970.82, 884,534.58 and 354,483.54 is: 489,184.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,970.82 : 884,534.58 = 354,483.54 : x
  2. Step 2: Convert to fraction form
    640,970.82/884,534.58 = 354,483.54/x
  3. Step 3: Cross multiply
    640,970.82x = 884,534.58 × 354,483.54
  4. Step 4: Simplify right side
    640,970.82x = 313,552,949,170.81
  5. Step 5: Solve for x
    x = 313,552,949,170.81/640,970.82
  6. Step 6: Final answer
    x = 489,184.44

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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.