Home / 768,031.20-1,152,046.80-487,749.60

Finding the Fourth Proportional to 768,031.20, 1,152,046.80 and 487,749.60

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Solution

The fourth proportional to 768,031.20, 1,152,046.80 and 487,749.60 is: 731,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,031.20 : 1,152,046.80 = 487,749.60 : x
  2. Step 2: Convert to fraction form
    768,031.20/1,152,046.80 = 487,749.60/x
  3. Step 3: Cross multiply
    768,031.20x = 1,152,046.80 × 487,749.60
  4. Step 4: Simplify right side
    768,031.20x = 561,910,365,881.28
  5. Step 5: Solve for x
    x = 561,910,365,881.28/768,031.20
  6. Step 6: Final answer
    x = 731,624.40

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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.