Home / 563,901.12-778,183.20-309,255.84

Finding the Fourth Proportional to 563,901.12, 778,183.20 and 309,255.84

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Solution

The fourth proportional to 563,901.12, 778,183.20 and 309,255.84 is: 426,772.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,901.12 : 778,183.20 = 309,255.84 : x
  2. Step 2: Convert to fraction form
    563,901.12/778,183.20 = 309,255.84/x
  3. Step 3: Cross multiply
    563,901.12x = 778,183.20 × 309,255.84
  4. Step 4: Simplify right side
    563,901.12x = 240,657,699,189.89
  5. Step 5: Solve for x
    x = 240,657,699,189.89/563,901.12
  6. Step 6: Final answer
    x = 426,772.87

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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.