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Finding the Fourth Proportional to 450,603.95, 621,553.41 and 278,574.53

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Solution

The fourth proportional to 450,603.95, 621,553.41 and 278,574.53 is: 384,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,603.95 : 621,553.41 = 278,574.53 : x
  2. Step 2: Convert to fraction form
    450,603.95/621,553.41 = 278,574.53/x
  3. Step 3: Cross multiply
    450,603.95x = 621,553.41 × 278,574.53
  4. Step 4: Simplify right side
    450,603.95x = 173,148,949,060.65
  5. Step 5: Solve for x
    x = 173,148,949,060.65/450,603.95
  6. Step 6: Final answer
    x = 384,259.72

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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.