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Finding the Fourth Proportional to 812,762.64, 1,121,516.64 and 468,594.72

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Solution

The fourth proportional to 812,762.64, 1,121,516.64 and 468,594.72 is: 646,605.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,762.64 : 1,121,516.64 = 468,594.72 : x
  2. Step 2: Convert to fraction form
    812,762.64/1,121,516.64 = 468,594.72/x
  3. Step 3: Cross multiply
    812,762.64x = 1,121,516.64 × 468,594.72
  4. Step 4: Simplify right side
    812,762.64x = 525,536,775,896.14
  5. Step 5: Solve for x
    x = 525,536,775,896.14/812,762.64
  6. Step 6: Final answer
    x = 646,605.48

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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.