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Finding the Fourth Proportional to 663,622.34, 915,799.73 and 361,816.34

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Solution

The fourth proportional to 663,622.34, 915,799.73 and 361,816.34 is: 499,307.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,622.34 : 915,799.73 = 361,816.34 : x
  2. Step 2: Convert to fraction form
    663,622.34/915,799.73 = 361,816.34/x
  3. Step 3: Cross multiply
    663,622.34x = 915,799.73 × 361,816.34
  4. Step 4: Simplify right side
    663,622.34x = 331,351,300,093.51
  5. Step 5: Solve for x
    x = 331,351,300,093.51/663,622.34
  6. Step 6: Final answer
    x = 499,307.03

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Double scale
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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.