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Finding the Fourth Proportional to 703,187.85, 970,329.72 and 393,032.37

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Solution

The fourth proportional to 703,187.85, 970,329.72 and 393,032.37 is: 542,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,187.85 : 970,329.72 = 393,032.37 : x
  2. Step 2: Convert to fraction form
    703,187.85/970,329.72 = 393,032.37/x
  3. Step 3: Cross multiply
    703,187.85x = 970,329.72 × 393,032.37
  4. Step 4: Simplify right side
    703,187.85x = 381,370,989,533.04
  5. Step 5: Solve for x
    x = 381,370,989,533.04/703,187.85
  6. Step 6: Final answer
    x = 542,345.82

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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.