Home / 490,678.42-677,139.96-272,890.14

Finding the Fourth Proportional to 490,678.42, 677,139.96 and 272,890.14

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Solution

The fourth proportional to 490,678.42, 677,139.96 and 272,890.14 is: 376,590.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,678.42 : 677,139.96 = 272,890.14 : x
  2. Step 2: Convert to fraction form
    490,678.42/677,139.96 = 272,890.14/x
  3. Step 3: Cross multiply
    490,678.42x = 677,139.96 × 272,890.14
  4. Step 4: Simplify right side
    490,678.42x = 184,784,818,483.99
  5. Step 5: Solve for x
    x = 184,784,818,483.99/490,678.42
  6. Step 6: Final answer
    x = 376,590.47

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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.