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Finding the Fourth Proportional to 567,257.91, 782,816.05 and 309,134.93

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Solution

The fourth proportional to 567,257.91, 782,816.05 and 309,134.93 is: 426,606.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,257.91 : 782,816.05 = 309,134.93 : x
  2. Step 2: Convert to fraction form
    567,257.91/782,816.05 = 309,134.93/x
  3. Step 3: Cross multiply
    567,257.91x = 782,816.05 × 309,134.93
  4. Step 4: Simplify right side
    567,257.91x = 241,995,780,132.71
  5. Step 5: Solve for x
    x = 241,995,780,132.71/567,257.91
  6. Step 6: Final answer
    x = 426,606.27

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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.