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Finding the Fourth Proportional to 1,425,858.67, 1,966,948.95 and 966,817.90

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Solution

The fourth proportional to 1,425,858.67, 1,966,948.95 and 966,817.90 is: 1,333,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,858.67 : 1,966,948.95 = 966,817.90 : x
  2. Step 2: Convert to fraction form
    1,425,858.67/1,966,948.95 = 966,817.90/x
  3. Step 3: Cross multiply
    1,425,858.67x = 1,966,948.95 × 966,817.90
  4. Step 4: Simplify right side
    1,425,858.67x = 1,901,681,453,246.21
  5. Step 5: Solve for x
    x = 1,901,681,453,246.21/1,425,858.67
  6. Step 6: Final answer
    x = 1,333,709.64

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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.