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Finding the Fourth Proportional to 767,416.72, 1,059,703.68 and 481,428.40

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Solution

The fourth proportional to 767,416.72, 1,059,703.68 and 481,428.40 is: 664,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,416.72 : 1,059,703.68 = 481,428.40 : x
  2. Step 2: Convert to fraction form
    767,416.72/1,059,703.68 = 481,428.40/x
  3. Step 3: Cross multiply
    767,416.72x = 1,059,703.68 × 481,428.40
  4. Step 4: Simplify right side
    767,416.72x = 510,171,447,136.51
  5. Step 5: Solve for x
    x = 510,171,447,136.51/767,416.72
  6. Step 6: Final answer
    x = 664,790.63

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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.