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Finding the Fourth Proportional to 899,920, 1,241,915.52 and 497,537.92

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Solution

The fourth proportional to 899,920, 1,241,915.52 and 497,537.92 is: 686,616.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,920 : 1,241,915.52 = 497,537.92 : x
  2. Step 2: Convert to fraction form
    899,920/1,241,915.52 = 497,537.92/x
  3. Step 3: Cross multiply
    899,920x = 1,241,915.52 × 497,537.92
  4. Step 4: Simplify right side
    899,920x = 617,900,064,636.52
  5. Step 5: Solve for x
    x = 617,900,064,636.52/899,920
  6. Step 6: Final answer
    x = 686,616.66

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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.