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Finding the Fourth Proportional to 672,907.76, 928,453.07 and 382,496.47

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Solution

The fourth proportional to 672,907.76, 928,453.07 and 382,496.47 is: 527,754.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,907.76 : 928,453.07 = 382,496.47 : x
  2. Step 2: Convert to fraction form
    672,907.76/928,453.07 = 382,496.47/x
  3. Step 3: Cross multiply
    672,907.76x = 928,453.07 × 382,496.47
  4. Step 4: Simplify right side
    672,907.76x = 355,130,021,835.66
  5. Step 5: Solve for x
    x = 355,130,021,835.66/672,907.76
  6. Step 6: Final answer
    x = 527,754.39

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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.