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Finding the Fourth Proportional to 1,010,455, 1,394,428.02 and 557,746.12

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Solution

The fourth proportional to 1,010,455, 1,394,428.02 and 557,746.12 is: 769,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,455 : 1,394,428.02 = 557,746.12 : x
  2. Step 2: Convert to fraction form
    1,010,455/1,394,428.02 = 557,746.12/x
  3. Step 3: Cross multiply
    1,010,455x = 1,394,428.02 × 557,746.12
  4. Step 4: Simplify right side
    1,010,455x = 777,736,817,774.28
  5. Step 5: Solve for x
    x = 777,736,817,774.28/1,010,455
  6. Step 6: Final answer
    x = 769,689.71

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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.