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Finding the Fourth Proportional to 700,620.88, 1,051,274.76 and 434,310.88

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Solution

The fourth proportional to 700,620.88, 1,051,274.76 and 434,310.88 is: 651,679.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,620.88 : 1,051,274.76 = 434,310.88 : x
  2. Step 2: Convert to fraction form
    700,620.88/1,051,274.76 = 434,310.88/x
  3. Step 3: Cross multiply
    700,620.88x = 1,051,274.76 × 434,310.88
  4. Step 4: Simplify right side
    700,620.88x = 456,580,066,137.39
  5. Step 5: Solve for x
    x = 456,580,066,137.39/700,620.88
  6. Step 6: Final answer
    x = 651,679.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.