Home / 385,666.20-578,499.30-379,105.20

Finding the Fourth Proportional to 385,666.20, 578,499.30 and 379,105.20

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Solution

The fourth proportional to 385,666.20, 578,499.30 and 379,105.20 is: 568,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,666.20 : 578,499.30 = 379,105.20 : x
  2. Step 2: Convert to fraction form
    385,666.20/578,499.30 = 379,105.20/x
  3. Step 3: Cross multiply
    385,666.20x = 578,499.30 × 379,105.20
  4. Step 4: Simplify right side
    385,666.20x = 219,312,092,826.36
  5. Step 5: Solve for x
    x = 219,312,092,826.36/385,666.20
  6. Step 6: Final answer
    x = 568,657.80

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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.