Home / 918,599.54-1,378,064.54-378,555.12

Finding the Fourth Proportional to 918,599.54, 1,378,064.54 and 378,555.12

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Solution

The fourth proportional to 918,599.54, 1,378,064.54 and 378,555.12 is: 567,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,599.54 : 1,378,064.54 = 378,555.12 : x
  2. Step 2: Convert to fraction form
    918,599.54/1,378,064.54 = 378,555.12/x
  3. Step 3: Cross multiply
    918,599.54x = 1,378,064.54 × 378,555.12
  4. Step 4: Simplify right side
    918,599.54x = 521,673,388,253.83
  5. Step 5: Solve for x
    x = 521,673,388,253.83/918,599.54
  6. Step 6: Final answer
    x = 567,900.78

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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.