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Finding the Fourth Proportional to 570,418.91, 787,187.39 and 312,291.53

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Solution

The fourth proportional to 570,418.91, 787,187.39 and 312,291.53 is: 430,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,418.91 : 787,187.39 = 312,291.53 : x
  2. Step 2: Convert to fraction form
    570,418.91/787,187.39 = 312,291.53/x
  3. Step 3: Cross multiply
    570,418.91x = 787,187.39 × 312,291.53
  4. Step 4: Simplify right side
    570,418.91x = 245,831,954,419.81
  5. Step 5: Solve for x
    x = 245,831,954,419.81/570,418.91
  6. Step 6: Final answer
    x = 430,967.40

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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.