Home / 654,434.65-903,280.19-399,999.13

Finding the Fourth Proportional to 654,434.65, 903,280.19 and 399,999.13

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Solution

The fourth proportional to 654,434.65, 903,280.19 and 399,999.13 is: 552,096.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,434.65 : 903,280.19 = 399,999.13 : x
  2. Step 2: Convert to fraction form
    654,434.65/903,280.19 = 399,999.13/x
  3. Step 3: Cross multiply
    654,434.65x = 903,280.19 × 399,999.13
  4. Step 4: Simplify right side
    654,434.65x = 361,311,288,146.24
  5. Step 5: Solve for x
    x = 361,311,288,146.24/654,434.65
  6. Step 6: Final answer
    x = 552,096.82

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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.