Home / 670,628.80-1,005,943.20-513,164.80

Finding the Fourth Proportional to 670,628.80, 1,005,943.20 and 513,164.80

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Solution

The fourth proportional to 670,628.80, 1,005,943.20 and 513,164.80 is: 769,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,628.80 : 1,005,943.20 = 513,164.80 : x
  2. Step 2: Convert to fraction form
    670,628.80/1,005,943.20 = 513,164.80/x
  3. Step 3: Cross multiply
    670,628.80x = 1,005,943.20 × 513,164.80
  4. Step 4: Simplify right side
    670,628.80x = 516,214,641,039.36
  5. Step 5: Solve for x
    x = 516,214,641,039.36/670,628.80
  6. Step 6: Final answer
    x = 769,747.20

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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.