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Finding the Fourth Proportional to 653,658.03, 902,146.28 and 399,156.03

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Solution

The fourth proportional to 653,658.03, 902,146.28 and 399,156.03 is: 550,895.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,658.03 : 902,146.28 = 399,156.03 : x
  2. Step 2: Convert to fraction form
    653,658.03/902,146.28 = 399,156.03/x
  3. Step 3: Cross multiply
    653,658.03x = 902,146.28 × 399,156.03
  4. Step 4: Simplify right side
    653,658.03x = 360,097,127,604.07
  5. Step 5: Solve for x
    x = 360,097,127,604.07/653,658.03
  6. Step 6: Final answer
    x = 550,895.29

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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.