Home / 743,878.40-1,115,817.60-459,795.20

Finding the Fourth Proportional to 743,878.40, 1,115,817.60 and 459,795.20

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Solution

The fourth proportional to 743,878.40, 1,115,817.60 and 459,795.20 is: 689,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,878.40 : 1,115,817.60 = 459,795.20 : x
  2. Step 2: Convert to fraction form
    743,878.40/1,115,817.60 = 459,795.20/x
  3. Step 3: Cross multiply
    743,878.40x = 1,115,817.60 × 459,795.20
  4. Step 4: Simplify right side
    743,878.40x = 513,047,576,555.52
  5. Step 5: Solve for x
    x = 513,047,576,555.52/743,878.40
  6. Step 6: Final answer
    x = 689,692.80

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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.