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Finding the Fourth Proportional to 554,130.27, 764,713.32 and 309,113.29

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Solution

The fourth proportional to 554,130.27, 764,713.32 and 309,113.29 is: 426,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,130.27 : 764,713.32 = 309,113.29 : x
  2. Step 2: Convert to fraction form
    554,130.27/764,713.32 = 309,113.29/x
  3. Step 3: Cross multiply
    554,130.27x = 764,713.32 × 309,113.29
  4. Step 4: Simplify right side
    554,130.27x = 236,383,045,655.67
  5. Step 5: Solve for x
    x = 236,383,045,655.67/554,130.27
  6. Step 6: Final answer
    x = 426,583.89

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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.