Home / 897,862.73-1,239,076.95-489,990.92

Finding the Fourth Proportional to 897,862.73, 1,239,076.95 and 489,990.92

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Solution

The fourth proportional to 897,862.73, 1,239,076.95 and 489,990.92 is: 676,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,862.73 : 1,239,076.95 = 489,990.92 : x
  2. Step 2: Convert to fraction form
    897,862.73/1,239,076.95 = 489,990.92/x
  3. Step 3: Cross multiply
    897,862.73x = 1,239,076.95 × 489,990.92
  4. Step 4: Simplify right side
    897,862.73x = 607,136,454,681.29
  5. Step 5: Solve for x
    x = 607,136,454,681.29/897,862.73
  6. Step 6: Final answer
    x = 676,201.87

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Double scale
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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.