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Finding the Fourth Proportional to 917,602.70, 1,376,404.05 and 681,406.70

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Solution

The fourth proportional to 917,602.70, 1,376,404.05 and 681,406.70 is: 1,022,110.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,602.70 : 1,376,404.05 = 681,406.70 : x
  2. Step 2: Convert to fraction form
    917,602.70/1,376,404.05 = 681,406.70/x
  3. Step 3: Cross multiply
    917,602.70x = 1,376,404.05 × 681,406.70
  4. Step 4: Simplify right side
    917,602.70x = 937,890,941,577.14
  5. Step 5: Solve for x
    x = 937,890,941,577.14/917,602.70
  6. Step 6: Final answer
    x = 1,022,110.05

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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.