Home / 664,421.70-916,583.13-434,877.96

Finding the Fourth Proportional to 664,421.70, 916,583.13 and 434,877.96

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Solution

The fourth proportional to 664,421.70, 916,583.13 and 434,877.96 is: 599,922.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,421.70 : 916,583.13 = 434,877.96 : x
  2. Step 2: Convert to fraction form
    664,421.70/916,583.13 = 434,877.96/x
  3. Step 3: Cross multiply
    664,421.70x = 916,583.13 × 434,877.96
  4. Step 4: Simplify right side
    664,421.70x = 398,601,801,744.82
  5. Step 5: Solve for x
    x = 398,601,801,744.82/664,421.70
  6. Step 6: Final answer
    x = 599,922.91

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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.