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Finding the Fourth Proportional to 612,642.82, 917,083.20 and 554,906.02

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Solution

The fourth proportional to 612,642.82, 917,083.20 and 554,906.02 is: 830,655.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,642.82 : 917,083.20 = 554,906.02 : x
  2. Step 2: Convert to fraction form
    612,642.82/917,083.20 = 554,906.02/x
  3. Step 3: Cross multiply
    612,642.82x = 917,083.20 × 554,906.02
  4. Step 4: Simplify right side
    612,642.82x = 508,894,988,520.86
  5. Step 5: Solve for x
    x = 508,894,988,520.86/612,642.82
  6. Step 6: Final answer
    x = 830,655.27

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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.