Home / 829,813.70-1,145,396.82-485,730.20

Finding the Fourth Proportional to 829,813.70, 1,145,396.82 and 485,730.20

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Solution

The fourth proportional to 829,813.70, 1,145,396.82 and 485,730.20 is: 670,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,813.70 : 1,145,396.82 = 485,730.20 : x
  2. Step 2: Convert to fraction form
    829,813.70/1,145,396.82 = 485,730.20/x
  3. Step 3: Cross multiply
    829,813.70x = 1,145,396.82 × 485,730.20
  4. Step 4: Simplify right side
    829,813.70x = 556,353,826,457.96
  5. Step 5: Solve for x
    x = 556,353,826,457.96/829,813.70
  6. Step 6: Final answer
    x = 670,456.30

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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.