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Finding the Fourth Proportional to 768,285.90, 1,153,376.55 and 483,975.90

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Solution

The fourth proportional to 768,285.90, 1,153,376.55 and 483,975.90 is: 726,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,285.90 : 1,153,376.55 = 483,975.90 : x
  2. Step 2: Convert to fraction form
    768,285.90/1,153,376.55 = 483,975.90/x
  3. Step 3: Cross multiply
    768,285.90x = 1,153,376.55 × 483,975.90
  4. Step 4: Simplify right side
    768,285.90x = 558,206,453,825.15
  5. Step 5: Solve for x
    x = 558,206,453,825.15/768,285.90
  6. Step 6: Final answer
    x = 726,560.85

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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.