Home / 639,939.84-882,838.08-385,146.24

Finding the Fourth Proportional to 639,939.84, 882,838.08 and 385,146.24

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Solution

The fourth proportional to 639,939.84, 882,838.08 and 385,146.24 is: 531,333.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,939.84 : 882,838.08 = 385,146.24 : x
  2. Step 2: Convert to fraction form
    639,939.84/882,838.08 = 385,146.24/x
  3. Step 3: Cross multiply
    639,939.84x = 882,838.08 × 385,146.24
  4. Step 4: Simplify right side
    639,939.84x = 340,021,767,040.82
  5. Step 5: Solve for x
    x = 340,021,767,040.82/639,939.84
  6. Step 6: Final answer
    x = 531,333.96

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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.