Home / 781,459.20-1,172,136.96-354,893.76

Finding the Fourth Proportional to 781,459.20, 1,172,136.96 and 354,893.76

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Solution

The fourth proportional to 781,459.20, 1,172,136.96 and 354,893.76 is: 532,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,459.20 : 1,172,136.96 = 354,893.76 : x
  2. Step 2: Convert to fraction form
    781,459.20/1,172,136.96 = 354,893.76/x
  3. Step 3: Cross multiply
    781,459.20x = 1,172,136.96 × 354,893.76
  4. Step 4: Simplify right side
    781,459.20x = 415,984,092,969.37
  5. Step 5: Solve for x
    x = 415,984,092,969.37/781,459.20
  6. Step 6: Final answer
    x = 532,317.10

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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.