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Finding the Fourth Proportional to 449,613.67, 671,140.54 and 392,862.13

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Solution

The fourth proportional to 449,613.67, 671,140.54 and 392,862.13 is: 586,427.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,613.67 : 671,140.54 = 392,862.13 : x
  2. Step 2: Convert to fraction form
    449,613.67/671,140.54 = 392,862.13/x
  3. Step 3: Cross multiply
    449,613.67x = 671,140.54 × 392,862.13
  4. Step 4: Simplify right side
    449,613.67x = 263,665,698,718.05
  5. Step 5: Solve for x
    x = 263,665,698,718.05/449,613.67
  6. Step 6: Final answer
    x = 586,427.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.