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Finding the Fourth Proportional to 639,051.76, 881,894.27 and 352,580.27

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Solution

The fourth proportional to 639,051.76, 881,894.27 and 352,580.27 is: 486,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,051.76 : 881,894.27 = 352,580.27 : x
  2. Step 2: Convert to fraction form
    639,051.76/881,894.27 = 352,580.27/x
  3. Step 3: Cross multiply
    639,051.76x = 881,894.27 × 352,580.27
  4. Step 4: Simplify right side
    639,051.76x = 310,938,518,065.15
  5. Step 5: Solve for x
    x = 310,938,518,065.15/639,051.76
  6. Step 6: Final answer
    x = 486,562.34

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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.