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Finding the Fourth Proportional to 628,858.60, 867,903.29 and 357,014.50

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Solution

The fourth proportional to 628,858.60, 867,903.29 and 357,014.50 is: 492,724.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,858.60 : 867,903.29 = 357,014.50 : x
  2. Step 2: Convert to fraction form
    628,858.60/867,903.29 = 357,014.50/x
  3. Step 3: Cross multiply
    628,858.60x = 867,903.29 × 357,014.50
  4. Step 4: Simplify right side
    628,858.60x = 309,854,059,766.32
  5. Step 5: Solve for x
    x = 309,854,059,766.32/628,858.60
  6. Step 6: Final answer
    x = 492,724.53

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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.