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Finding the Fourth Proportional to 659,416.54, 910,043.76 and 369,057.28

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Solution

The fourth proportional to 659,416.54, 910,043.76 and 369,057.28 is: 509,326.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,416.54 : 910,043.76 = 369,057.28 : x
  2. Step 2: Convert to fraction form
    659,416.54/910,043.76 = 369,057.28/x
  3. Step 3: Cross multiply
    659,416.54x = 910,043.76 × 369,057.28
  4. Step 4: Simplify right side
    659,416.54x = 335,858,274,746.57
  5. Step 5: Solve for x
    x = 335,858,274,746.57/659,416.54
  6. Step 6: Final answer
    x = 509,326.43

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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.