Home / 989,487.60-1,484,231.40-491,823.60

Finding the Fourth Proportional to 989,487.60, 1,484,231.40 and 491,823.60

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Solution

The fourth proportional to 989,487.60, 1,484,231.40 and 491,823.60 is: 737,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,487.60 : 1,484,231.40 = 491,823.60 : x
  2. Step 2: Convert to fraction form
    989,487.60/1,484,231.40 = 491,823.60/x
  3. Step 3: Cross multiply
    989,487.60x = 1,484,231.40 × 491,823.60
  4. Step 4: Simplify right side
    989,487.60x = 729,980,030,381.04
  5. Step 5: Solve for x
    x = 729,980,030,381.04/989,487.60
  6. Step 6: Final answer
    x = 737,735.40

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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.