Home / 628,726.05-865,989.23-483,253.70

Finding the Fourth Proportional to 628,726.05, 865,989.23 and 483,253.70

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Solution

The fourth proportional to 628,726.05, 865,989.23 and 483,253.70 is: 665,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,726.05 : 865,989.23 = 483,253.70 : x
  2. Step 2: Convert to fraction form
    628,726.05/865,989.23 = 483,253.70/x
  3. Step 3: Cross multiply
    628,726.05x = 865,989.23 × 483,253.70
  4. Step 4: Simplify right side
    628,726.05x = 418,492,492,811.44
  5. Step 5: Solve for x
    x = 418,492,492,811.44/628,726.05
  6. Step 6: Final answer
    x = 665,619.78

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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.