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Finding the Fourth Proportional to 661,018.42, 912,484.50 and 446,449.13

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Solution

The fourth proportional to 661,018.42, 912,484.50 and 446,449.13 is: 616,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,018.42 : 912,484.50 = 446,449.13 : x
  2. Step 2: Convert to fraction form
    661,018.42/912,484.50 = 446,449.13/x
  3. Step 3: Cross multiply
    661,018.42x = 912,484.50 × 446,449.13
  4. Step 4: Simplify right side
    661,018.42x = 407,377,906,601.06
  5. Step 5: Solve for x
    x = 407,377,906,601.06/661,018.42
  6. Step 6: Final answer
    x = 616,288.29

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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.