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Finding the Fourth Proportional to 611,253.57, 917,079.60 and 307,490.95

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Solution

The fourth proportional to 611,253.57, 917,079.60 and 307,490.95 is: 461,336.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,253.57 : 917,079.60 = 307,490.95 : x
  2. Step 2: Convert to fraction form
    611,253.57/917,079.60 = 307,490.95/x
  3. Step 3: Cross multiply
    611,253.57x = 917,079.60 × 307,490.95
  4. Step 4: Simplify right side
    611,253.57x = 281,993,679,729.06
  5. Step 5: Solve for x
    x = 281,993,679,729.06/611,253.57
  6. Step 6: Final answer
    x = 461,336.66

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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.