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Finding the Fourth Proportional to 664,240.40, 996,457.80 and 348,721.10

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Solution

The fourth proportional to 664,240.40, 996,457.80 and 348,721.10 is: 523,132.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,240.40 : 996,457.80 = 348,721.10 : x
  2. Step 2: Convert to fraction form
    664,240.40/996,457.80 = 348,721.10/x
  3. Step 3: Cross multiply
    664,240.40x = 996,457.80 × 348,721.10
  4. Step 4: Simplify right side
    664,240.40x = 347,485,860,119.58
  5. Step 5: Solve for x
    x = 347,485,860,119.58/664,240.40
  6. Step 6: Final answer
    x = 523,132.68

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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.