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Finding the Fourth Proportional to 544,526.80, 751,336.86 and 318,128.56

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Solution

The fourth proportional to 544,526.80, 751,336.86 and 318,128.56 is: 438,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,526.80 : 751,336.86 = 318,128.56 : x
  2. Step 2: Convert to fraction form
    544,526.80/751,336.86 = 318,128.56/x
  3. Step 3: Cross multiply
    544,526.80x = 751,336.86 × 318,128.56
  4. Step 4: Simplify right side
    544,526.80x = 239,021,711,468.38
  5. Step 5: Solve for x
    x = 239,021,711,468.38/544,526.80
  6. Step 6: Final answer
    x = 438,953.07

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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.