Home / 638,985.40-958,314.02-189,599.98

Finding the Fourth Proportional to 638,985.40, 958,314.02 and 189,599.98

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Solution

The fourth proportional to 638,985.40, 958,314.02 and 189,599.98 is: 284,351.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,985.40 : 958,314.02 = 189,599.98 : x
  2. Step 2: Convert to fraction form
    638,985.40/958,314.02 = 189,599.98/x
  3. Step 3: Cross multiply
    638,985.40x = 958,314.02 × 189,599.98
  4. Step 4: Simplify right side
    638,985.40x = 181,696,319,025.72
  5. Step 5: Solve for x
    x = 181,696,319,025.72/638,985.40
  6. Step 6: Final answer
    x = 284,351.28

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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.