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Finding the Fourth Proportional to 1,176,894, 1,765,603.44 and 428,940

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Solution

The fourth proportional to 1,176,894, 1,765,603.44 and 428,940 is: 643,505.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176,894 : 1,765,603.44 = 428,940 : x
  2. Step 2: Convert to fraction form
    1,176,894/1,765,603.44 = 428,940/x
  3. Step 3: Cross multiply
    1,176,894x = 1,765,603.44 × 428,940
  4. Step 4: Simplify right side
    1,176,894x = 757,337,939,553.60
  5. Step 5: Solve for x
    x = 757,337,939,553.60/1,176,894
  6. Step 6: Final answer
    x = 643,505.65

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