Home / 417,815.40-626,723.10-391,243.35

Finding the Fourth Proportional to 417,815.40, 626,723.10 and 391,243.35

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Solution

The fourth proportional to 417,815.40, 626,723.10 and 391,243.35 is: 586,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,815.40 : 626,723.10 = 391,243.35 : x
  2. Step 2: Convert to fraction form
    417,815.40/626,723.10 = 391,243.35/x
  3. Step 3: Cross multiply
    417,815.40x = 626,723.10 × 391,243.35
  4. Step 4: Simplify right side
    417,815.40x = 245,201,245,166.39
  5. Step 5: Solve for x
    x = 245,201,245,166.39/417,815.40
  6. Step 6: Final answer
    x = 586,865.03

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Similar ratio
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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.