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Finding the Fourth Proportional to 628,459.66, 867,123.11 and 370,347.15

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Solution

The fourth proportional to 628,459.66, 867,123.11 and 370,347.15 is: 510,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,459.66 : 867,123.11 = 370,347.15 : x
  2. Step 2: Convert to fraction form
    628,459.66/867,123.11 = 370,347.15/x
  3. Step 3: Cross multiply
    628,459.66x = 867,123.11 × 370,347.15
  4. Step 4: Simplify right side
    628,459.66x = 321,136,570,635.90
  5. Step 5: Solve for x
    x = 321,136,570,635.90/628,459.66
  6. Step 6: Final answer
    x = 510,989.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.