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Finding the Fourth Proportional to 714,295.74, 985,662.92 and 423,857.18

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Solution

The fourth proportional to 714,295.74, 985,662.92 and 423,857.18 is: 584,884.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,295.74 : 985,662.92 = 423,857.18 : x
  2. Step 2: Convert to fraction form
    714,295.74/985,662.92 = 423,857.18/x
  3. Step 3: Cross multiply
    714,295.74x = 985,662.92 × 423,857.18
  4. Step 4: Simplify right side
    714,295.74x = 417,780,300,773.45
  5. Step 5: Solve for x
    x = 417,780,300,773.45/714,295.74
  6. Step 6: Final answer
    x = 584,884.21

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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.