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Finding the Fourth Proportional to 534,937.10, 802,405.65 and 429,961.10

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Solution

The fourth proportional to 534,937.10, 802,405.65 and 429,961.10 is: 644,941.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,937.10 : 802,405.65 = 429,961.10 : x
  2. Step 2: Convert to fraction form
    534,937.10/802,405.65 = 429,961.10/x
  3. Step 3: Cross multiply
    534,937.10x = 802,405.65 × 429,961.10
  4. Step 4: Simplify right side
    534,937.10x = 345,003,215,920.22
  5. Step 5: Solve for x
    x = 345,003,215,920.22/534,937.10
  6. Step 6: Final answer
    x = 644,941.65

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1.5x scale

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.