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Finding the Fourth Proportional to 768,127.32, 1,059,720.06 and 481,147.80

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Solution

The fourth proportional to 768,127.32, 1,059,720.06 and 481,147.80 is: 663,798.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,127.32 : 1,059,720.06 = 481,147.80 : x
  2. Step 2: Convert to fraction form
    768,127.32/1,059,720.06 = 481,147.80/x
  3. Step 3: Cross multiply
    768,127.32x = 1,059,720.06 × 481,147.80
  4. Step 4: Simplify right side
    768,127.32x = 509,881,975,484.87
  5. Step 5: Solve for x
    x = 509,881,975,484.87/768,127.32
  6. Step 6: Final answer
    x = 663,798.78

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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.