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Finding the Fourth Proportional to 557,700.51, 769,618.95 and 309,334.88

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Solution

The fourth proportional to 557,700.51, 769,618.95 and 309,334.88 is: 426,877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,700.51 : 769,618.95 = 309,334.88 : x
  2. Step 2: Convert to fraction form
    557,700.51/769,618.95 = 309,334.88/x
  3. Step 3: Cross multiply
    557,700.51x = 769,618.95 × 309,334.88
  4. Step 4: Simplify right side
    557,700.51x = 238,069,981,385.37
  5. Step 5: Solve for x
    x = 238,069,981,385.37/557,700.51
  6. Step 6: Final answer
    x = 426,877.83

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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.