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Finding the Fourth Proportional to 498,830.61, 688,420.98 and 283,970.64

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Solution

The fourth proportional to 498,830.61, 688,420.98 and 283,970.64 is: 391,899.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,830.61 : 688,420.98 = 283,970.64 : x
  2. Step 2: Convert to fraction form
    498,830.61/688,420.98 = 283,970.64/x
  3. Step 3: Cross multiply
    498,830.61x = 688,420.98 × 283,970.64
  4. Step 4: Simplify right side
    498,830.61x = 195,491,346,280.03
  5. Step 5: Solve for x
    x = 195,491,346,280.03/498,830.61
  6. Step 6: Final answer
    x = 391,899.26

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