Home / 646,741.40-970,112.10-489,277.40

Finding the Fourth Proportional to 646,741.40, 970,112.10 and 489,277.40

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Solution

The fourth proportional to 646,741.40, 970,112.10 and 489,277.40 is: 733,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,741.40 : 970,112.10 = 489,277.40 : x
  2. Step 2: Convert to fraction form
    646,741.40/970,112.10 = 489,277.40/x
  3. Step 3: Cross multiply
    646,741.40x = 970,112.10 × 489,277.40
  4. Step 4: Simplify right side
    646,741.40x = 474,653,925,996.54
  5. Step 5: Solve for x
    x = 474,653,925,996.54/646,741.40
  6. Step 6: Final answer
    x = 733,916.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.