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Finding the Fourth Proportional to 531,520.64, 733,508.16 and 289,805.12

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Solution

The fourth proportional to 531,520.64, 733,508.16 and 289,805.12 is: 399,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,520.64 : 733,508.16 = 289,805.12 : x
  2. Step 2: Convert to fraction form
    531,520.64/733,508.16 = 289,805.12/x
  3. Step 3: Cross multiply
    531,520.64x = 733,508.16 × 289,805.12
  4. Step 4: Simplify right side
    531,520.64x = 212,574,420,329.78
  5. Step 5: Solve for x
    x = 212,574,420,329.78/531,520.64
  6. Step 6: Final answer
    x = 399,936.34

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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.