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Finding the Fourth Proportional to 539,442.40, 808,472.40 and 479,999.20

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Solution

The fourth proportional to 539,442.40, 808,472.40 and 479,999.20 is: 719,383.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,442.40 : 808,472.40 = 479,999.20 : x
  2. Step 2: Convert to fraction form
    539,442.40/808,472.40 = 479,999.20/x
  3. Step 3: Cross multiply
    539,442.40x = 808,472.40 × 479,999.20
  4. Step 4: Simplify right side
    539,442.40x = 388,066,105,222.08
  5. Step 5: Solve for x
    x = 388,066,105,222.08/539,442.40
  6. Step 6: Final answer
    x = 719,383.77

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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.