Home / 764,401.60-1,146,602.40-512,459.20

Finding the Fourth Proportional to 764,401.60, 1,146,602.40 and 512,459.20

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Solution

The fourth proportional to 764,401.60, 1,146,602.40 and 512,459.20 is: 768,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,401.60 : 1,146,602.40 = 512,459.20 : x
  2. Step 2: Convert to fraction form
    764,401.60/1,146,602.40 = 512,459.20/x
  3. Step 3: Cross multiply
    764,401.60x = 1,146,602.40 × 512,459.20
  4. Step 4: Simplify right side
    764,401.60x = 587,586,948,622.08
  5. Step 5: Solve for x
    x = 587,586,948,622.08/764,401.60
  6. Step 6: Final answer
    x = 768,688.80

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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.