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Finding the Fourth Proportional to 662,890.40, 992,780.40 and 451,383.20

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Solution

The fourth proportional to 662,890.40, 992,780.40 and 451,383.20 is: 676,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,890.40 : 992,780.40 = 451,383.20 : x
  2. Step 2: Convert to fraction form
    662,890.40/992,780.40 = 451,383.20/x
  3. Step 3: Cross multiply
    662,890.40x = 992,780.40 × 451,383.20
  4. Step 4: Simplify right side
    662,890.40x = 448,124,393,849.28
  5. Step 5: Solve for x
    x = 448,124,393,849.28/662,890.40
  6. Step 6: Final answer
    x = 676,015.81

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1.5x scale

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.