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Finding the Fourth Proportional to 638,967.96, 881,770.86 and 352,500.12

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Solution

The fourth proportional to 638,967.96, 881,770.86 and 352,500.12 is: 486,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,967.96 : 881,770.86 = 352,500.12 : x
  2. Step 2: Convert to fraction form
    638,967.96/881,770.86 = 352,500.12/x
  3. Step 3: Cross multiply
    638,967.96x = 881,770.86 × 352,500.12
  4. Step 4: Simplify right side
    638,967.96x = 310,824,333,962.50
  5. Step 5: Solve for x
    x = 310,824,333,962.50/638,967.96
  6. Step 6: Final answer
    x = 486,447.45

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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.