Home / 635,281.76-877,099.12-393,822.38

Finding the Fourth Proportional to 635,281.76, 877,099.12 and 393,822.38

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Solution

The fourth proportional to 635,281.76, 877,099.12 and 393,822.38 is: 543,729.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,281.76 : 877,099.12 = 393,822.38 : x
  2. Step 2: Convert to fraction form
    635,281.76/877,099.12 = 393,822.38/x
  3. Step 3: Cross multiply
    635,281.76x = 877,099.12 × 393,822.38
  4. Step 4: Simplify right side
    635,281.76x = 345,421,262,934.31
  5. Step 5: Solve for x
    x = 345,421,262,934.31/635,281.76
  6. Step 6: Final answer
    x = 543,729.23

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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.