Home / 612,380.98-845,037.87-340,432.31

Finding the Fourth Proportional to 612,380.98, 845,037.87 and 340,432.31

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Solution

The fourth proportional to 612,380.98, 845,037.87 and 340,432.31 is: 469,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,380.98 : 845,037.87 = 340,432.31 : x
  2. Step 2: Convert to fraction form
    612,380.98/845,037.87 = 340,432.31/x
  3. Step 3: Cross multiply
    612,380.98x = 845,037.87 × 340,432.31
  4. Step 4: Simplify right side
    612,380.98x = 287,678,194,532.01
  5. Step 5: Solve for x
    x = 287,678,194,532.01/612,380.98
  6. Step 6: Final answer
    x = 469,769.97

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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.