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Finding the Fourth Proportional to 768,117.60, 1,153,558.80 and 743,234.40

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Solution

The fourth proportional to 768,117.60, 1,153,558.80 and 743,234.40 is: 1,116,189.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,117.60 : 1,153,558.80 = 743,234.40 : x
  2. Step 2: Convert to fraction form
    768,117.60/1,153,558.80 = 743,234.40/x
  3. Step 3: Cross multiply
    768,117.60x = 1,153,558.80 × 743,234.40
  4. Step 4: Simplify right side
    768,117.60x = 857,364,582,582.72
  5. Step 5: Solve for x
    x = 857,364,582,582.72/768,117.60
  6. Step 6: Final answer
    x = 1,116,189.22

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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.