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Finding the Fourth Proportional to 915,629.10, 1,373,443.65 and 868,973.10

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Solution

The fourth proportional to 915,629.10, 1,373,443.65 and 868,973.10 is: 1,303,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,629.10 : 1,373,443.65 = 868,973.10 : x
  2. Step 2: Convert to fraction form
    915,629.10/1,373,443.65 = 868,973.10/x
  3. Step 3: Cross multiply
    915,629.10x = 1,373,443.65 × 868,973.10
  4. Step 4: Simplify right side
    915,629.10x = 1,193,485,586,215.82
  5. Step 5: Solve for x
    x = 1,193,485,586,215.82/915,629.10
  6. Step 6: Final answer
    x = 1,303,459.65

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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.