Home / 650,390.07-897,574.47-378,463.35

Finding the Fourth Proportional to 650,390.07, 897,574.47 and 378,463.35

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Solution

The fourth proportional to 650,390.07, 897,574.47 and 378,463.35 is: 522,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,390.07 : 897,574.47 = 378,463.35 : x
  2. Step 2: Convert to fraction form
    650,390.07/897,574.47 = 378,463.35/x
  3. Step 3: Cross multiply
    650,390.07x = 897,574.47 × 378,463.35
  4. Step 4: Simplify right side
    650,390.07x = 339,699,040,790.67
  5. Step 5: Solve for x
    x = 339,699,040,790.67/650,390.07
  6. Step 6: Final answer
    x = 522,300.47

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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.