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Finding the Fourth Proportional to 664,358.20, 916,809.78 and 362,552.20

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Solution

The fourth proportional to 664,358.20, 916,809.78 and 362,552.20 is: 500,319.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,358.20 : 916,809.78 = 362,552.20 : x
  2. Step 2: Convert to fraction form
    664,358.20/916,809.78 = 362,552.20/x
  3. Step 3: Cross multiply
    664,358.20x = 916,809.78 × 362,552.20
  4. Step 4: Simplify right side
    664,358.20x = 332,391,402,720.52
  5. Step 5: Solve for x
    x = 332,391,402,720.52/664,358.20
  6. Step 6: Final answer
    x = 500,319.56

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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.