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Finding the Fourth Proportional to 456,636, 630,313.12 and 265,809.76

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Solution

The fourth proportional to 456,636, 630,313.12 and 265,809.76 is: 366,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,636 : 630,313.12 = 265,809.76 : x
  2. Step 2: Convert to fraction form
    456,636/630,313.12 = 265,809.76/x
  3. Step 3: Cross multiply
    456,636x = 630,313.12 × 265,809.76
  4. Step 4: Simplify right side
    456,636x = 167,543,379,152.05
  5. Step 5: Solve for x
    x = 167,543,379,152.05/456,636
  6. Step 6: Final answer
    x = 366,907.95

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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.