Home / 820,951.21-1,132,982.72-458,445.13

Finding the Fourth Proportional to 820,951.21, 1,132,982.72 and 458,445.13

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Solution

The fourth proportional to 820,951.21, 1,132,982.72 and 458,445.13 is: 632,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,951.21 : 1,132,982.72 = 458,445.13 : x
  2. Step 2: Convert to fraction form
    820,951.21/1,132,982.72 = 458,445.13/x
  3. Step 3: Cross multiply
    820,951.21x = 1,132,982.72 × 458,445.13
  4. Step 4: Simplify right side
    820,951.21x = 519,410,415,904.42
  5. Step 5: Solve for x
    x = 519,410,415,904.42/820,951.21
  6. Step 6: Final answer
    x = 632,693.41

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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.