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Finding the Fourth Proportional to 875,087.70, 1,312,631.55 and 743,867.70

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Solution

The fourth proportional to 875,087.70, 1,312,631.55 and 743,867.70 is: 1,115,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,087.70 : 1,312,631.55 = 743,867.70 : x
  2. Step 2: Convert to fraction form
    875,087.70/1,312,631.55 = 743,867.70/x
  3. Step 3: Cross multiply
    875,087.70x = 1,312,631.55 × 743,867.70
  4. Step 4: Simplify right side
    875,087.70x = 976,424,212,045.94
  5. Step 5: Solve for x
    x = 976,424,212,045.94/875,087.70
  6. Step 6: Final answer
    x = 1,115,801.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.