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Finding the Fourth Proportional to 662,886.40, 994,329.60 and 289,638.40

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Solution

The fourth proportional to 662,886.40, 994,329.60 and 289,638.40 is: 434,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,886.40 : 994,329.60 = 289,638.40 : x
  2. Step 2: Convert to fraction form
    662,886.40/994,329.60 = 289,638.40/x
  3. Step 3: Cross multiply
    662,886.40x = 994,329.60 × 289,638.40
  4. Step 4: Simplify right side
    662,886.40x = 287,996,034,416.64
  5. Step 5: Solve for x
    x = 287,996,034,416.64/662,886.40
  6. Step 6: Final answer
    x = 434,457.60

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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.