Home / 777,349.40-1,163,390.46-478,019.57

Finding the Fourth Proportional to 777,349.40, 1,163,390.46 and 478,019.57

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Solution

The fourth proportional to 777,349.40, 1,163,390.46 and 478,019.57 is: 715,409.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,349.40 : 1,163,390.46 = 478,019.57 : x
  2. Step 2: Convert to fraction form
    777,349.40/1,163,390.46 = 478,019.57/x
  3. Step 3: Cross multiply
    777,349.40x = 1,163,390.46 × 478,019.57
  4. Step 4: Simplify right side
    777,349.40x = 556,123,401,614.35
  5. Step 5: Solve for x
    x = 556,123,401,614.35/777,349.40
  6. Step 6: Final answer
    x = 715,409.83

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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.