Home / 768,725.10-1,152,087.47-312,784.98

Finding the Fourth Proportional to 768,725.10, 1,152,087.47 and 312,784.98

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Solution

The fourth proportional to 768,725.10, 1,152,087.47 and 312,784.98 is: 468,770.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,725.10 : 1,152,087.47 = 312,784.98 : x
  2. Step 2: Convert to fraction form
    768,725.10/1,152,087.47 = 312,784.98/x
  3. Step 3: Cross multiply
    768,725.10x = 1,152,087.47 × 312,784.98
  4. Step 4: Simplify right side
    768,725.10x = 360,355,656,262.20
  5. Step 5: Solve for x
    x = 360,355,656,262.20/768,725.10
  6. Step 6: Final answer
    x = 468,770.51

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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.