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Finding the Fourth Proportional to 714,313.02, 985,751.16 and 392,023.92

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Solution

The fourth proportional to 714,313.02, 985,751.16 and 392,023.92 is: 540,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,313.02 : 985,751.16 = 392,023.92 : x
  2. Step 2: Convert to fraction form
    714,313.02/985,751.16 = 392,023.92/x
  3. Step 3: Cross multiply
    714,313.02x = 985,751.16 × 392,023.92
  4. Step 4: Simplify right side
    714,313.02x = 386,438,033,887.75
  5. Step 5: Solve for x
    x = 386,438,033,887.75/714,313.02
  6. Step 6: Final answer
    x = 540,992.57

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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.