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Finding the Fourth Proportional to 897,391.71, 1,238,404.41 and 489,502.44

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Solution

The fourth proportional to 897,391.71, 1,238,404.41 and 489,502.44 is: 675,515.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,391.71 : 1,238,404.41 = 489,502.44 : x
  2. Step 2: Convert to fraction form
    897,391.71/1,238,404.41 = 489,502.44/x
  3. Step 3: Cross multiply
    897,391.71x = 1,238,404.41 × 489,502.44
  4. Step 4: Simplify right side
    897,391.71x = 606,201,980,401.76
  5. Step 5: Solve for x
    x = 606,201,980,401.76/897,391.71
  6. Step 6: Final answer
    x = 675,515.47

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Double scale
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1.5x scale

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.