Home / 714,243.34-985,663.25-391,974.31

Finding the Fourth Proportional to 714,243.34, 985,663.25 and 391,974.31

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Solution

The fourth proportional to 714,243.34, 985,663.25 and 391,974.31 is: 540,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,243.34 : 985,663.25 = 391,974.31 : x
  2. Step 2: Convert to fraction form
    714,243.34/985,663.25 = 391,974.31/x
  3. Step 3: Cross multiply
    714,243.34x = 985,663.25 × 391,974.31
  4. Step 4: Simplify right side
    714,243.34x = 386,354,672,311.11
  5. Step 5: Solve for x
    x = 386,354,672,311.11/714,243.34
  6. Step 6: Final answer
    x = 540,928.63

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1.5x scale

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.