Home / 665,890.85-997,688.10-310,175.30

Finding the Fourth Proportional to 665,890.85, 997,688.10 and 310,175.30

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Solution

The fourth proportional to 665,890.85, 997,688.10 and 310,175.30 is: 464,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,890.85 : 997,688.10 = 310,175.30 : x
  2. Step 2: Convert to fraction form
    665,890.85/997,688.10 = 310,175.30/x
  3. Step 3: Cross multiply
    665,890.85x = 997,688.10 × 310,175.30
  4. Step 4: Simplify right side
    665,890.85x = 309,458,205,723.93
  5. Step 5: Solve for x
    x = 309,458,205,723.93/665,890.85
  6. Step 6: Final answer
    x = 464,728.12

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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.