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Finding the Fourth Proportional to 553,699.45, 777,278.75 and 553,699.45

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Solution

The fourth proportional to 553,699.45, 777,278.75 and 553,699.45 is: 777,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,699.45 : 777,278.75 = 553,699.45 : x
  2. Step 2: Convert to fraction form
    553,699.45/777,278.75 = 553,699.45/x
  3. Step 3: Cross multiply
    553,699.45x = 777,278.75 × 553,699.45
  4. Step 4: Simplify right side
    553,699.45x = 430,378,816,371.69
  5. Step 5: Solve for x
    x = 430,378,816,371.69/553,699.45
  6. Step 6: Final answer
    x = 777,278.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.