Home / 829,817.72-1,145,402.36-485,734.20

Finding the Fourth Proportional to 829,817.72, 1,145,402.36 and 485,734.20

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Solution

The fourth proportional to 829,817.72, 1,145,402.36 and 485,734.20 is: 670,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,817.72 : 1,145,402.36 = 485,734.20 : x
  2. Step 2: Convert to fraction form
    829,817.72/1,145,402.36 = 485,734.20/x
  3. Step 3: Cross multiply
    829,817.72x = 1,145,402.36 × 485,734.20
  4. Step 4: Simplify right side
    829,817.72x = 556,361,099,012.71
  5. Step 5: Solve for x
    x = 556,361,099,012.71/829,817.72
  6. Step 6: Final answer
    x = 670,461.82

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Double scale
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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.