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Finding the Fourth Proportional to 515,518.08, 709,798.32 and 468,278.88

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Solution

The fourth proportional to 515,518.08, 709,798.32 and 468,278.88 is: 644,756.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,518.08 : 709,798.32 = 468,278.88 : x
  2. Step 2: Convert to fraction form
    515,518.08/709,798.32 = 468,278.88/x
  3. Step 3: Cross multiply
    515,518.08x = 709,798.32 × 468,278.88
  4. Step 4: Simplify right side
    515,518.08x = 332,383,562,315.48
  5. Step 5: Solve for x
    x = 332,383,562,315.48/515,518.08
  6. Step 6: Final answer
    x = 644,756.36

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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.