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Finding the Fourth Proportional to 897,746, 1,238,915.40 and 495,363.92

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Solution

The fourth proportional to 897,746, 1,238,915.40 and 495,363.92 is: 683,616.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,746 : 1,238,915.40 = 495,363.92 : x
  2. Step 2: Convert to fraction form
    897,746/1,238,915.40 = 495,363.92/x
  3. Step 3: Cross multiply
    897,746x = 1,238,915.40 × 495,363.92
  4. Step 4: Simplify right side
    897,746x = 613,713,989,092.37
  5. Step 5: Solve for x
    x = 613,713,989,092.37/897,746
  6. Step 6: Final answer
    x = 683,616.51

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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.