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Finding the Fourth Proportional to 676,245.36, 933,006.96 and 389,726.28

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Solution

The fourth proportional to 676,245.36, 933,006.96 and 389,726.28 is: 537,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,245.36 : 933,006.96 = 389,726.28 : x
  2. Step 2: Convert to fraction form
    676,245.36/933,006.96 = 389,726.28/x
  3. Step 3: Cross multiply
    676,245.36x = 933,006.96 × 389,726.28
  4. Step 4: Simplify right side
    676,245.36x = 363,617,331,734.91
  5. Step 5: Solve for x
    x = 363,617,331,734.91/676,245.36
  6. Step 6: Final answer
    x = 537,700.30

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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.