Home / 770,309.10-1,153,276.65-728,415.90

Finding the Fourth Proportional to 770,309.10, 1,153,276.65 and 728,415.90

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Solution

The fourth proportional to 770,309.10, 1,153,276.65 and 728,415.90 is: 1,090,555.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,309.10 : 1,153,276.65 = 728,415.90 : x
  2. Step 2: Convert to fraction form
    770,309.10/1,153,276.65 = 728,415.90/x
  3. Step 3: Cross multiply
    770,309.10x = 1,153,276.65 × 728,415.90
  4. Step 4: Simplify right side
    770,309.10x = 840,065,048,958.74
  5. Step 5: Solve for x
    x = 840,065,048,958.74/770,309.10
  6. Step 6: Final answer
    x = 1,090,555.79

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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.