Home / 668,423.10-1,003,618.80-518,832.30

Finding the Fourth Proportional to 668,423.10, 1,003,618.80 and 518,832.30

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Solution

The fourth proportional to 668,423.10, 1,003,618.80 and 518,832.30 is: 779,012.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,423.10 : 1,003,618.80 = 518,832.30 : x
  2. Step 2: Convert to fraction form
    668,423.10/1,003,618.80 = 518,832.30/x
  3. Step 3: Cross multiply
    668,423.10x = 1,003,618.80 × 518,832.30
  4. Step 4: Simplify right side
    668,423.10x = 520,709,850,327.24
  5. Step 5: Solve for x
    x = 520,709,850,327.24/668,423.10
  6. Step 6: Final answer
    x = 779,012.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.