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Finding the Fourth Proportional to 663,303.74, 915,362.24 and 376,839.54

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Solution

The fourth proportional to 663,303.74, 915,362.24 and 376,839.54 is: 520,040.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,303.74 : 915,362.24 = 376,839.54 : x
  2. Step 2: Convert to fraction form
    663,303.74/915,362.24 = 376,839.54/x
  3. Step 3: Cross multiply
    663,303.74x = 915,362.24 × 376,839.54
  4. Step 4: Simplify right side
    663,303.74x = 344,944,683,570.77
  5. Step 5: Solve for x
    x = 344,944,683,570.77/663,303.74
  6. Step 6: Final answer
    x = 520,040.32

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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.