Home / 639,029.40-957,377.70-520,056.60

Finding the Fourth Proportional to 639,029.40, 957,377.70 and 520,056.60

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Solution

The fourth proportional to 639,029.40, 957,377.70 and 520,056.60 is: 779,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,029.40 : 957,377.70 = 520,056.60 : x
  2. Step 2: Convert to fraction form
    639,029.40/957,377.70 = 520,056.60/x
  3. Step 3: Cross multiply
    639,029.40x = 957,377.70 × 520,056.60
  4. Step 4: Simplify right side
    639,029.40x = 497,890,591,577.82
  5. Step 5: Solve for x
    x = 497,890,591,577.82/639,029.40
  6. Step 6: Final answer
    x = 779,135.66

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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.