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Finding the Fourth Proportional to 659,914.59, 910,682.19 and 358,108.59

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Solution

The fourth proportional to 659,914.59, 910,682.19 and 358,108.59 is: 494,189.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,914.59 : 910,682.19 = 358,108.59 : x
  2. Step 2: Convert to fraction form
    659,914.59/910,682.19 = 358,108.59/x
  3. Step 3: Cross multiply
    659,914.59x = 910,682.19 × 358,108.59
  4. Step 4: Simplify right side
    659,914.59x = 326,123,118,414.07
  5. Step 5: Solve for x
    x = 326,123,118,414.07/659,914.59
  6. Step 6: Final answer
    x = 494,189.89

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1.5x scale

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.