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Finding the Fourth Proportional to 489,038.70, 734,724.45 and 437,717.10

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Solution

The fourth proportional to 489,038.70, 734,724.45 and 437,717.10 is: 657,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,038.70 : 734,724.45 = 437,717.10 : x
  2. Step 2: Convert to fraction form
    489,038.70/734,724.45 = 437,717.10/x
  3. Step 3: Cross multiply
    489,038.70x = 734,724.45 × 437,717.10
  4. Step 4: Simplify right side
    489,038.70x = 321,601,455,553.10
  5. Step 5: Solve for x
    x = 321,601,455,553.10/489,038.70
  6. Step 6: Final answer
    x = 657,619.64

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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.