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Finding the Fourth Proportional to 456,890, 630,420.72 and 295,722.68

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Solution

The fourth proportional to 456,890, 630,420.72 and 295,722.68 is: 408,040.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,890 : 630,420.72 = 295,722.68 : x
  2. Step 2: Convert to fraction form
    456,890/630,420.72 = 295,722.68/x
  3. Step 3: Cross multiply
    456,890x = 630,420.72 × 295,722.68
  4. Step 4: Simplify right side
    456,890x = 186,429,704,845.93
  5. Step 5: Solve for x
    x = 186,429,704,845.93/456,890
  6. Step 6: Final answer
    x = 408,040.68

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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.