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Finding the Fourth Proportional to 563,889.66, 778,177.71 and 309,238.62

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Solution

The fourth proportional to 563,889.66, 778,177.71 and 309,238.62 is: 426,754.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,889.66 : 778,177.71 = 309,238.62 : x
  2. Step 2: Convert to fraction form
    563,889.66/778,177.71 = 309,238.62/x
  3. Step 3: Cross multiply
    563,889.66x = 778,177.71 × 309,238.62
  4. Step 4: Simplify right side
    563,889.66x = 240,642,601,155.16
  5. Step 5: Solve for x
    x = 240,642,601,155.16/563,889.66
  6. Step 6: Final answer
    x = 426,754.77

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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.