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Finding the Fourth Proportional to 503,755.66, 755,686.47 and 290,518.72

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Solution

The fourth proportional to 503,755.66, 755,686.47 and 290,518.72 is: 435,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,755.66 : 755,686.47 = 290,518.72 : x
  2. Step 2: Convert to fraction form
    503,755.66/755,686.47 = 290,518.72/x
  3. Step 3: Cross multiply
    503,755.66x = 755,686.47 × 290,518.72
  4. Step 4: Simplify right side
    503,755.66x = 219,541,065,985.72
  5. Step 5: Solve for x
    x = 219,541,065,985.72/503,755.66
  6. Step 6: Final answer
    x = 435,808.63

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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.