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Finding the Fourth Proportional to 545,616.61, 752,988.78 and 330,765.73

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Solution

The fourth proportional to 545,616.61, 752,988.78 and 330,765.73 is: 456,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,616.61 : 752,988.78 = 330,765.73 : x
  2. Step 2: Convert to fraction form
    545,616.61/752,988.78 = 330,765.73/x
  3. Step 3: Cross multiply
    545,616.61x = 752,988.78 × 330,765.73
  4. Step 4: Simplify right side
    545,616.61x = 249,062,883,498.51
  5. Step 5: Solve for x
    x = 249,062,883,498.51/545,616.61
  6. Step 6: Final answer
    x = 456,479.66

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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.