Home / 897,828.60-1,238,998.51-489,929.21

Finding the Fourth Proportional to 897,828.60, 1,238,998.51 and 489,929.21

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Solution

The fourth proportional to 897,828.60, 1,238,998.51 and 489,929.21 is: 676,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,828.60 : 1,238,998.51 = 489,929.21 : x
  2. Step 2: Convert to fraction form
    897,828.60/1,238,998.51 = 489,929.21/x
  3. Step 3: Cross multiply
    897,828.60x = 1,238,998.51 × 489,929.21
  4. Step 4: Simplify right side
    897,828.60x = 607,021,560,259.14
  5. Step 5: Solve for x
    x = 607,021,560,259.14/897,828.60
  6. Step 6: Final answer
    x = 676,099.60

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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.