Home / 768,043.20-1,152,064.80-643,627.20

Finding the Fourth Proportional to 768,043.20, 1,152,064.80 and 643,627.20

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Solution

The fourth proportional to 768,043.20, 1,152,064.80 and 643,627.20 is: 965,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,043.20 : 1,152,064.80 = 643,627.20 : x
  2. Step 2: Convert to fraction form
    768,043.20/1,152,064.80 = 643,627.20/x
  3. Step 3: Cross multiply
    768,043.20x = 1,152,064.80 × 643,627.20
  4. Step 4: Simplify right side
    768,043.20x = 741,500,241,442.56
  5. Step 5: Solve for x
    x = 741,500,241,442.56/768,043.20
  6. Step 6: Final answer
    x = 965,440.80

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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.