Home / 638,896.10-881,799.09-384,329.30

Finding the Fourth Proportional to 638,896.10, 881,799.09 and 384,329.30

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Solution

The fourth proportional to 638,896.10, 881,799.09 and 384,329.30 is: 530,448.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,896.10 : 881,799.09 = 384,329.30 : x
  2. Step 2: Convert to fraction form
    638,896.10/881,799.09 = 384,329.30/x
  3. Step 3: Cross multiply
    638,896.10x = 881,799.09 × 384,329.30
  4. Step 4: Simplify right side
    638,896.10x = 338,901,227,000.34
  5. Step 5: Solve for x
    x = 338,901,227,000.34/638,896.10
  6. Step 6: Final answer
    x = 530,448.11

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Double scale
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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.