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Finding the Fourth Proportional to 612,452.90, 917,695.20 and 453,020.60

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Solution

The fourth proportional to 612,452.90, 917,695.20 and 453,020.60 is: 678,802.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,452.90 : 917,695.20 = 453,020.60 : x
  2. Step 2: Convert to fraction form
    612,452.90/917,695.20 = 453,020.60/x
  3. Step 3: Cross multiply
    612,452.90x = 917,695.20 × 453,020.60
  4. Step 4: Simplify right side
    612,452.90x = 415,734,830,121.12
  5. Step 5: Solve for x
    x = 415,734,830,121.12/612,452.90
  6. Step 6: Final answer
    x = 678,802.94

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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.