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Finding the Fourth Proportional to 548,329.86, 756,690.93 and 306,612.90

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Solution

The fourth proportional to 548,329.86, 756,690.93 and 306,612.90 is: 423,123.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,329.86 : 756,690.93 = 306,612.90 : x
  2. Step 2: Convert to fraction form
    548,329.86/756,690.93 = 306,612.90/x
  3. Step 3: Cross multiply
    548,329.86x = 756,690.93 × 306,612.90
  4. Step 4: Simplify right side
    548,329.86x = 232,011,200,451.00
  5. Step 5: Solve for x
    x = 232,011,200,451.00/548,329.86
  6. Step 6: Final answer
    x = 423,123.41

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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.