Home / 788,687.40-1,183,031.10-489,505.80

Finding the Fourth Proportional to 788,687.40, 1,183,031.10 and 489,505.80

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Solution

The fourth proportional to 788,687.40, 1,183,031.10 and 489,505.80 is: 734,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,687.40 : 1,183,031.10 = 489,505.80 : x
  2. Step 2: Convert to fraction form
    788,687.40/1,183,031.10 = 489,505.80/x
  3. Step 3: Cross multiply
    788,687.40x = 1,183,031.10 × 489,505.80
  4. Step 4: Simplify right side
    788,687.40x = 579,100,585,030.38
  5. Step 5: Solve for x
    x = 579,100,585,030.38/788,687.40
  6. Step 6: Final answer
    x = 734,258.70

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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.