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Finding the Fourth Proportional to 1,006,563, 1,389,066.66 and 553,863.72

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Solution

The fourth proportional to 1,006,563, 1,389,066.66 and 553,863.72 is: 764,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006,563 : 1,389,066.66 = 553,863.72 : x
  2. Step 2: Convert to fraction form
    1,006,563/1,389,066.66 = 553,863.72/x
  3. Step 3: Cross multiply
    1,006,563x = 1,389,066.66 × 553,863.72
  4. Step 4: Simplify right side
    1,006,563x = 769,353,627,635.58
  5. Step 5: Solve for x
    x = 769,353,627,635.58/1,006,563
  6. Step 6: Final answer
    x = 764,337.28

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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.