Home / 985,656.86-1,478,667.54-311,907.77

Finding the Fourth Proportional to 985,656.86, 1,478,667.54 and 311,907.77

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Solution

The fourth proportional to 985,656.86, 1,478,667.54 and 311,907.77 is: 467,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,656.86 : 1,478,667.54 = 311,907.77 : x
  2. Step 2: Convert to fraction form
    985,656.86/1,478,667.54 = 311,907.77/x
  3. Step 3: Cross multiply
    985,656.86x = 1,478,667.54 × 311,907.77
  4. Step 4: Simplify right side
    985,656.86x = 461,207,894,972.79
  5. Step 5: Solve for x
    x = 461,207,894,972.79/985,656.86
  6. Step 6: Final answer
    x = 467,919.33

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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.