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Finding the Fourth Proportional to 663,401.70, 995,102.55 and 612,080.10

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Solution

The fourth proportional to 663,401.70, 995,102.55 and 612,080.10 is: 918,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,401.70 : 995,102.55 = 612,080.10 : x
  2. Step 2: Convert to fraction form
    663,401.70/995,102.55 = 612,080.10/x
  3. Step 3: Cross multiply
    663,401.70x = 995,102.55 × 612,080.10
  4. Step 4: Simplify right side
    663,401.70x = 609,082,468,314.26
  5. Step 5: Solve for x
    x = 609,082,468,314.26/663,401.70
  6. Step 6: Final answer
    x = 918,120.15

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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.