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Finding the Fourth Proportional to 545,618.64, 752,991.54 and 330,767.76

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Solution

The fourth proportional to 545,618.64, 752,991.54 and 330,767.76 is: 456,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,618.64 : 752,991.54 = 330,767.76 : x
  2. Step 2: Convert to fraction form
    545,618.64/752,991.54 = 330,767.76/x
  3. Step 3: Cross multiply
    545,618.64x = 752,991.54 × 330,767.76
  4. Step 4: Simplify right side
    545,618.64x = 249,065,324,984.75
  5. Step 5: Solve for x
    x = 249,065,324,984.75/545,618.64
  6. Step 6: Final answer
    x = 456,482.43

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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.