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Finding the Fourth Proportional to 659,709.60, 910,401 and 357,903.60

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Solution

The fourth proportional to 659,709.60, 910,401 and 357,903.60 is: 493,907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,709.60 : 910,401 = 357,903.60 : x
  2. Step 2: Convert to fraction form
    659,709.60/910,401 = 357,903.60/x
  3. Step 3: Cross multiply
    659,709.60x = 910,401 × 357,903.60
  4. Step 4: Simplify right side
    659,709.60x = 325,835,795,343.60
  5. Step 5: Solve for x
    x = 325,835,795,343.60/659,709.60
  6. Step 6: Final answer
    x = 493,907.92

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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.