Home / 897,039.63-1,237,905.65-489,140.44

Finding the Fourth Proportional to 897,039.63, 1,237,905.65 and 489,140.44

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Solution

The fourth proportional to 897,039.63, 1,237,905.65 and 489,140.44 is: 675,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,039.63 : 1,237,905.65 = 489,140.44 : x
  2. Step 2: Convert to fraction form
    897,039.63/1,237,905.65 = 489,140.44/x
  3. Step 3: Cross multiply
    897,039.63x = 1,237,905.65 × 489,140.44
  4. Step 4: Simplify right side
    897,039.63x = 605,509,712,447.57
  5. Step 5: Solve for x
    x = 605,509,712,447.57/897,039.63
  6. Step 6: Final answer
    x = 675,008.88

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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.