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Finding the Fourth Proportional to 531,118.80, 732,944.02 and 289,401.44

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Solution

The fourth proportional to 531,118.80, 732,944.02 and 289,401.44 is: 399,374.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,118.80 : 732,944.02 = 289,401.44 : x
  2. Step 2: Convert to fraction form
    531,118.80/732,944.02 = 289,401.44/x
  3. Step 3: Cross multiply
    531,118.80x = 732,944.02 × 289,401.44
  4. Step 4: Simplify right side
    531,118.80x = 212,115,054,827.39
  5. Step 5: Solve for x
    x = 212,115,054,827.39/531,118.80
  6. Step 6: Final answer
    x = 399,374.03

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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.