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Finding the Fourth Proportional to 659,816.20, 910,556.94 and 358,010.20

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Solution

The fourth proportional to 659,816.20, 910,556.94 and 358,010.20 is: 494,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,816.20 : 910,556.94 = 358,010.20 : x
  2. Step 2: Convert to fraction form
    659,816.20/910,556.94 = 358,010.20/x
  3. Step 3: Cross multiply
    659,816.20x = 910,556.94 × 358,010.20
  4. Step 4: Simplify right side
    659,816.20x = 325,988,672,200.79
  5. Step 5: Solve for x
    x = 325,988,672,200.79/659,816.20
  6. Step 6: Final answer
    x = 494,059.82

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Double scale
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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.