Home / 1,278,499.42-1,916,400.84-425,342.56

Finding the Fourth Proportional to 1,278,499.42, 1,916,400.84 and 425,342.56

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Solution

The fourth proportional to 1,278,499.42, 1,916,400.84 and 425,342.56 is: 637,565.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,499.42 : 1,916,400.84 = 425,342.56 : x
  2. Step 2: Convert to fraction form
    1,278,499.42/1,916,400.84 = 425,342.56/x
  3. Step 3: Cross multiply
    1,278,499.42x = 1,916,400.84 × 425,342.56
  4. Step 4: Simplify right side
    1,278,499.42x = 815,126,839,271.75
  5. Step 5: Solve for x
    x = 815,126,839,271.75/1,278,499.42
  6. Step 6: Final answer
    x = 637,565.28

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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.