Home / 768,811.20-1,153,216.80-503,390.40

Finding the Fourth Proportional to 768,811.20, 1,153,216.80 and 503,390.40

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Solution

The fourth proportional to 768,811.20, 1,153,216.80 and 503,390.40 is: 755,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,811.20 : 1,153,216.80 = 503,390.40 : x
  2. Step 2: Convert to fraction form
    768,811.20/1,153,216.80 = 503,390.40/x
  3. Step 3: Cross multiply
    768,811.20x = 1,153,216.80 × 503,390.40
  4. Step 4: Simplify right side
    768,811.20x = 580,518,266,238.72
  5. Step 5: Solve for x
    x = 580,518,266,238.72/768,811.20
  6. Step 6: Final answer
    x = 755,085.60

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Similar ratio
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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.