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Finding the Fourth Proportional to 557,008.94, 768,392.79 and 375,491.18

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Solution

The fourth proportional to 557,008.94, 768,392.79 and 375,491.18 is: 517,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,008.94 : 768,392.79 = 375,491.18 : x
  2. Step 2: Convert to fraction form
    557,008.94/768,392.79 = 375,491.18/x
  3. Step 3: Cross multiply
    557,008.94x = 768,392.79 × 375,491.18
  4. Step 4: Simplify right side
    557,008.94x = 288,524,715,420.59
  5. Step 5: Solve for x
    x = 288,524,715,420.59/557,008.94
  6. Step 6: Final answer
    x = 517,989.38

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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.