Home / 664,416.48-916,575.85-434,872.71

Finding the Fourth Proportional to 664,416.48, 916,575.85 and 434,872.71

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Solution

The fourth proportional to 664,416.48, 916,575.85 and 434,872.71 is: 599,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,416.48 : 916,575.85 = 434,872.71 : x
  2. Step 2: Convert to fraction form
    664,416.48/916,575.85 = 434,872.71/x
  3. Step 3: Cross multiply
    664,416.48x = 916,575.85 × 434,872.71
  4. Step 4: Simplify right side
    664,416.48x = 398,593,824,353.64
  5. Step 5: Solve for x
    x = 398,593,824,353.64/664,416.48
  6. Step 6: Final answer
    x = 599,915.62

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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.