Home / 768,139.20-1,152,208.80-726,667.20

Finding the Fourth Proportional to 768,139.20, 1,152,208.80 and 726,667.20

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Solution

The fourth proportional to 768,139.20, 1,152,208.80 and 726,667.20 is: 1,090,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,139.20 : 1,152,208.80 = 726,667.20 : x
  2. Step 2: Convert to fraction form
    768,139.20/1,152,208.80 = 726,667.20/x
  3. Step 3: Cross multiply
    768,139.20x = 1,152,208.80 × 726,667.20
  4. Step 4: Simplify right side
    768,139.20x = 837,272,342,511.36
  5. Step 5: Solve for x
    x = 837,272,342,511.36/768,139.20
  6. Step 6: Final answer
    x = 1,090,000.80

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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.