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Finding the Fourth Proportional to 545,617.86, 752,990.51 and 330,766.98

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Solution

The fourth proportional to 545,617.86, 752,990.51 and 330,766.98 is: 456,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,617.86 : 752,990.51 = 330,766.98 : x
  2. Step 2: Convert to fraction form
    545,617.86/752,990.51 = 330,766.98/x
  3. Step 3: Cross multiply
    545,617.86x = 752,990.51 × 330,766.98
  4. Step 4: Simplify right side
    545,617.86x = 249,064,395,307.53
  5. Step 5: Solve for x
    x = 249,064,395,307.53/545,617.86
  6. Step 6: Final answer
    x = 456,481.38

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1.5x scale

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.