Home / 1,242,697.40-1,864,047.94-378,139.88

Finding the Fourth Proportional to 1,242,697.40, 1,864,047.94 and 378,139.88

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Solution

The fourth proportional to 1,242,697.40, 1,864,047.94 and 378,139.88 is: 567,210.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,697.40 : 1,864,047.94 = 378,139.88 : x
  2. Step 2: Convert to fraction form
    1,242,697.40/1,864,047.94 = 378,139.88/x
  3. Step 3: Cross multiply
    1,242,697.40x = 1,864,047.94 × 378,139.88
  4. Step 4: Simplify right side
    1,242,697.40x = 704,870,864,345.85
  5. Step 5: Solve for x
    x = 704,870,864,345.85/1,242,697.40
  6. Step 6: Final answer
    x = 567,210.38

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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.