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Finding the Fourth Proportional to 661,018.68, 912,484.84 and 446,449.37

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Solution

The fourth proportional to 661,018.68, 912,484.84 and 446,449.37 is: 616,288.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,018.68 : 912,484.84 = 446,449.37 : x
  2. Step 2: Convert to fraction form
    661,018.68/912,484.84 = 446,449.37/x
  3. Step 3: Cross multiply
    661,018.68x = 912,484.84 × 446,449.37
  4. Step 4: Simplify right side
    661,018.68x = 407,378,283,117.64
  5. Step 5: Solve for x
    x = 407,378,283,117.64/661,018.68
  6. Step 6: Final answer
    x = 616,288.61

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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.