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Finding the Fourth Proportional to 868,625.70, 1,302,938.55 and 805,640.10

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Solution

The fourth proportional to 868,625.70, 1,302,938.55 and 805,640.10 is: 1,208,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,625.70 : 1,302,938.55 = 805,640.10 : x
  2. Step 2: Convert to fraction form
    868,625.70/1,302,938.55 = 805,640.10/x
  3. Step 3: Cross multiply
    868,625.70x = 1,302,938.55 × 805,640.10
  4. Step 4: Simplify right side
    868,625.70x = 1,049,699,543,715.86
  5. Step 5: Solve for x
    x = 1,049,699,543,715.86/868,625.70
  6. Step 6: Final answer
    x = 1,208,460.15

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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.