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Finding the Fourth Proportional to 478,017, 659,694.96 and 276,813

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Solution

The fourth proportional to 478,017, 659,694.96 and 276,813 is: 382,020.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,017 : 659,694.96 = 276,813 : x
  2. Step 2: Convert to fraction form
    478,017/659,694.96 = 276,813/x
  3. Step 3: Cross multiply
    478,017x = 659,694.96 × 276,813
  4. Step 4: Simplify right side
    478,017x = 182,612,140,962.48
  5. Step 5: Solve for x
    x = 182,612,140,962.48/478,017
  6. Step 6: Final answer
    x = 382,020.18

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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.