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Finding the Fourth Proportional to 547,471.50, 755,511.03 and 309,007.50

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Solution

The fourth proportional to 547,471.50, 755,511.03 and 309,007.50 is: 426,430.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,471.50 : 755,511.03 = 309,007.50 : x
  2. Step 2: Convert to fraction form
    547,471.50/755,511.03 = 309,007.50/x
  3. Step 3: Cross multiply
    547,471.50x = 755,511.03 × 309,007.50
  4. Step 4: Simplify right side
    547,471.50x = 233,458,574,602.73
  5. Step 5: Solve for x
    x = 233,458,574,602.73/547,471.50
  6. Step 6: Final answer
    x = 426,430.55

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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.