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Finding the Fourth Proportional to 1,222,704, 1,687,487.04 and 686,160

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Solution

The fourth proportional to 1,222,704, 1,687,487.04 and 686,160 is: 946,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,704 : 1,687,487.04 = 686,160 : x
  2. Step 2: Convert to fraction form
    1,222,704/1,687,487.04 = 686,160/x
  3. Step 3: Cross multiply
    1,222,704x = 1,687,487.04 × 686,160
  4. Step 4: Simplify right side
    1,222,704x = 1,157,886,107,366.40
  5. Step 5: Solve for x
    x = 1,157,886,107,366.40/1,222,704
  6. Step 6: Final answer
    x = 946,988.08

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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.