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Finding the Fourth Proportional to 1,318,600.73, 1,819,679.98 and 714,988.73

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Solution

The fourth proportional to 1,318,600.73, 1,819,679.98 and 714,988.73 is: 986,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,600.73 : 1,819,679.98 = 714,988.73 : x
  2. Step 2: Convert to fraction form
    1,318,600.73/1,819,679.98 = 714,988.73/x
  3. Step 3: Cross multiply
    1,318,600.73x = 1,819,679.98 × 714,988.73
  4. Step 4: Simplify right side
    1,318,600.73x = 1,301,050,677,906.63
  5. Step 5: Solve for x
    x = 1,301,050,677,906.63/1,318,600.73
  6. Step 6: Final answer
    x = 986,690.40

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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.