Home / 665,581.65-997,789.28-399,448.05

Finding the Fourth Proportional to 665,581.65, 997,789.28 and 399,448.05

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Solution

The fourth proportional to 665,581.65, 997,789.28 and 399,448.05 is: 598,822.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,581.65 : 997,789.28 = 399,448.05 : x
  2. Step 2: Convert to fraction form
    665,581.65/997,789.28 = 399,448.05/x
  3. Step 3: Cross multiply
    665,581.65x = 997,789.28 × 399,448.05
  4. Step 4: Simplify right side
    665,581.65x = 398,564,980,209.66
  5. Step 5: Solve for x
    x = 398,564,980,209.66/665,581.65
  6. Step 6: Final answer
    x = 598,822.07

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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.