Home / 501,825.90-691,565.12-492,603.60

Finding the Fourth Proportional to 501,825.90, 691,565.12 and 492,603.60

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Solution

The fourth proportional to 501,825.90, 691,565.12 and 492,603.60 is: 678,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,825.90 : 691,565.12 = 492,603.60 : x
  2. Step 2: Convert to fraction form
    501,825.90/691,565.12 = 492,603.60/x
  3. Step 3: Cross multiply
    501,825.90x = 691,565.12 × 492,603.60
  4. Step 4: Simplify right side
    501,825.90x = 340,667,467,746.43
  5. Step 5: Solve for x
    x = 340,667,467,746.43/501,825.90
  6. Step 6: Final answer
    x = 678,855.89

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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.