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Finding the Fourth Proportional to 661,228.83, 912,495.51 and 359,422.83

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Solution

The fourth proportional to 661,228.83, 912,495.51 and 359,422.83 is: 496,003.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,228.83 : 912,495.51 = 359,422.83 : x
  2. Step 2: Convert to fraction form
    661,228.83/912,495.51 = 359,422.83/x
  3. Step 3: Cross multiply
    661,228.83x = 912,495.51 × 359,422.83
  4. Step 4: Simplify right side
    661,228.83x = 327,971,718,566.49
  5. Step 5: Solve for x
    x = 327,971,718,566.49/661,228.83
  6. Step 6: Final answer
    x = 496,003.36

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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.