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Finding the Fourth Proportional to 482,658.36, 722,805.98 and 340,153.40

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Solution

The fourth proportional to 482,658.36, 722,805.98 and 340,153.40 is: 509,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,658.36 : 722,805.98 = 340,153.40 : x
  2. Step 2: Convert to fraction form
    482,658.36/722,805.98 = 340,153.40/x
  3. Step 3: Cross multiply
    482,658.36x = 722,805.98 × 340,153.40
  4. Step 4: Simplify right side
    482,658.36x = 245,864,911,637.33
  5. Step 5: Solve for x
    x = 245,864,911,637.33/482,658.36
  6. Step 6: Final answer
    x = 509,397.40

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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.