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Finding the Fourth Proportional to 659,455.45, 989,338.67 and 525,027.75

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Solution

The fourth proportional to 659,455.45, 989,338.67 and 525,027.75 is: 787,665.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,455.45 : 989,338.67 = 525,027.75 : x
  2. Step 2: Convert to fraction form
    659,455.45/989,338.67 = 525,027.75/x
  3. Step 3: Cross multiply
    659,455.45x = 989,338.67 × 525,027.75
  4. Step 4: Simplify right side
    659,455.45x = 519,430,248,326.26
  5. Step 5: Solve for x
    x = 519,430,248,326.26/659,455.45
  6. Step 6: Final answer
    x = 787,665.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.