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Finding the Fourth Proportional to 556,815.77, 768,406.26 and 302,166.96

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Solution

The fourth proportional to 556,815.77, 768,406.26 and 302,166.96 is: 416,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,815.77 : 768,406.26 = 302,166.96 : x
  2. Step 2: Convert to fraction form
    556,815.77/768,406.26 = 302,166.96/x
  3. Step 3: Cross multiply
    556,815.77x = 768,406.26 × 302,166.96
  4. Step 4: Simplify right side
    556,815.77x = 232,186,983,629.17
  5. Step 5: Solve for x
    x = 232,186,983,629.17/556,815.77
  6. Step 6: Final answer
    x = 416,990.67

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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.