Home / 714,214.40-985,567.64-391,945.16

Finding the Fourth Proportional to 714,214.40, 985,567.64 and 391,945.16

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Solution

The fourth proportional to 714,214.40, 985,567.64 and 391,945.16 is: 540,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,214.40 : 985,567.64 = 391,945.16 : x
  2. Step 2: Convert to fraction form
    714,214.40/985,567.64 = 391,945.16/x
  3. Step 3: Cross multiply
    714,214.40x = 985,567.64 × 391,945.16
  4. Step 4: Simplify right side
    714,214.40x = 386,288,466,350.62
  5. Step 5: Solve for x
    x = 386,288,466,350.62/714,214.40
  6. Step 6: Final answer
    x = 540,857.85

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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.