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Finding the Fourth Proportional to 531,521.54, 733,505.49 and 289,802.18

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Solution

The fourth proportional to 531,521.54, 733,505.49 and 289,802.18 is: 399,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,521.54 : 733,505.49 = 289,802.18 : x
  2. Step 2: Convert to fraction form
    531,521.54/733,505.49 = 289,802.18/x
  3. Step 3: Cross multiply
    531,521.54x = 733,505.49 × 289,802.18
  4. Step 4: Simplify right side
    531,521.54x = 212,571,490,043.97
  5. Step 5: Solve for x
    x = 212,571,490,043.97/531,521.54
  6. Step 6: Final answer
    x = 399,930.15

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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.