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Finding the Fourth Proportional to 768,709.90, 1,060,797.63 and 429,170.86

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Solution

The fourth proportional to 768,709.90, 1,060,797.63 and 429,170.86 is: 592,243.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,709.90 : 1,060,797.63 = 429,170.86 : x
  2. Step 2: Convert to fraction form
    768,709.90/1,060,797.63 = 429,170.86/x
  3. Step 3: Cross multiply
    768,709.90x = 1,060,797.63 × 429,170.86
  4. Step 4: Simplify right side
    768,709.90x = 455,263,431,153.06
  5. Step 5: Solve for x
    x = 455,263,431,153.06/768,709.90
  6. Step 6: Final answer
    x = 592,243.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.