Home / 659,140.56-909,621.14-387,219.92

Finding the Fourth Proportional to 659,140.56, 909,621.14 and 387,219.92

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Solution

The fourth proportional to 659,140.56, 909,621.14 and 387,219.92 is: 534,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,140.56 : 909,621.14 = 387,219.92 : x
  2. Step 2: Convert to fraction form
    659,140.56/909,621.14 = 387,219.92/x
  3. Step 3: Cross multiply
    659,140.56x = 909,621.14 × 387,219.92
  4. Step 4: Simplify right side
    659,140.56x = 352,223,425,061.11
  5. Step 5: Solve for x
    x = 352,223,425,061.11/659,140.56
  6. Step 6: Final answer
    x = 534,367.70

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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.