Home / 638,989.40-958,320.02-189,603.98

Finding the Fourth Proportional to 638,989.40, 958,320.02 and 189,603.98

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Solution

The fourth proportional to 638,989.40, 958,320.02 and 189,603.98 is: 284,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,989.40 : 958,320.02 = 189,603.98 : x
  2. Step 2: Convert to fraction form
    638,989.40/958,320.02 = 189,603.98/x
  3. Step 3: Cross multiply
    638,989.40x = 958,320.02 × 189,603.98
  4. Step 4: Simplify right side
    638,989.40x = 181,701,289,905.68
  5. Step 5: Solve for x
    x = 181,701,289,905.68/638,989.40
  6. Step 6: Final answer
    x = 284,357.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.