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Finding the Fourth Proportional to 546,619.20, 819,928.80 and 472,891.20

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Solution

The fourth proportional to 546,619.20, 819,928.80 and 472,891.20 is: 709,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,619.20 : 819,928.80 = 472,891.20 : x
  2. Step 2: Convert to fraction form
    546,619.20/819,928.80 = 472,891.20/x
  3. Step 3: Cross multiply
    546,619.20x = 819,928.80 × 472,891.20
  4. Step 4: Simplify right side
    546,619.20x = 387,737,114,146.56
  5. Step 5: Solve for x
    x = 387,737,114,146.56/546,619.20
  6. Step 6: Final answer
    x = 709,336.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.