Home / 745,840.80-1,118,761.20-462,405.60

Finding the Fourth Proportional to 745,840.80, 1,118,761.20 and 462,405.60

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Solution

The fourth proportional to 745,840.80, 1,118,761.20 and 462,405.60 is: 693,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,840.80 : 1,118,761.20 = 462,405.60 : x
  2. Step 2: Convert to fraction form
    745,840.80/1,118,761.20 = 462,405.60/x
  3. Step 3: Cross multiply
    745,840.80x = 1,118,761.20 × 462,405.60
  4. Step 4: Simplify right side
    745,840.80x = 517,321,443,942.72
  5. Step 5: Solve for x
    x = 517,321,443,942.72/745,840.80
  6. Step 6: Final answer
    x = 693,608.40

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Similar ratio
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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.