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Finding the Fourth Proportional to 659,912.93, 910,679.85 and 358,106.93

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Solution

The fourth proportional to 659,912.93, 910,679.85 and 358,106.93 is: 494,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,912.93 : 910,679.85 = 358,106.93 : x
  2. Step 2: Convert to fraction form
    659,912.93/910,679.85 = 358,106.93/x
  3. Step 3: Cross multiply
    659,912.93x = 910,679.85 × 358,106.93
  4. Step 4: Simplify right side
    659,912.93x = 326,120,765,296.36
  5. Step 5: Solve for x
    x = 326,120,765,296.36/659,912.93
  6. Step 6: Final answer
    x = 494,187.57

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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.