Home / 820,890.45-1,132,851.42-458,300.43

Finding the Fourth Proportional to 820,890.45, 1,132,851.42 and 458,300.43

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Solution

The fourth proportional to 820,890.45, 1,132,851.42 and 458,300.43 is: 632,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,890.45 : 1,132,851.42 = 458,300.43 : x
  2. Step 2: Convert to fraction form
    820,890.45/1,132,851.42 = 458,300.43/x
  3. Step 3: Cross multiply
    820,890.45x = 1,132,851.42 × 458,300.43
  4. Step 4: Simplify right side
    820,890.45x = 519,186,292,912.11
  5. Step 5: Solve for x
    x = 519,186,292,912.11/820,890.45
  6. Step 6: Final answer
    x = 632,467.21

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1.5x scale

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.