Home / 705,435.65-1,057,428.72-278,798.12

Finding the Fourth Proportional to 705,435.65, 1,057,428.72 and 278,798.12

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Solution

The fourth proportional to 705,435.65, 1,057,428.72 and 278,798.12 is: 417,910.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,435.65 : 1,057,428.72 = 278,798.12 : x
  2. Step 2: Convert to fraction form
    705,435.65/1,057,428.72 = 278,798.12/x
  3. Step 3: Cross multiply
    705,435.65x = 1,057,428.72 × 278,798.12
  4. Step 4: Simplify right side
    705,435.65x = 294,809,133,882.86
  5. Step 5: Solve for x
    x = 294,809,133,882.86/705,435.65
  6. Step 6: Final answer
    x = 417,910.74

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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.