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Finding the Fourth Proportional to 545,643.09, 752,868.71 and 330,835.95

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Solution

The fourth proportional to 545,643.09, 752,868.71 and 330,835.95 is: 456,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,643.09 : 752,868.71 = 330,835.95 : x
  2. Step 2: Convert to fraction form
    545,643.09/752,868.71 = 330,835.95/x
  3. Step 3: Cross multiply
    545,643.09x = 752,868.71 × 330,835.95
  4. Step 4: Simplify right side
    545,643.09x = 249,076,033,243.95
  5. Step 5: Solve for x
    x = 249,076,033,243.95/545,643.09
  6. Step 6: Final answer
    x = 456,481.60

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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.