Home / 764,904.20-1,147,356.30-345,000.20

Finding the Fourth Proportional to 764,904.20, 1,147,356.30 and 345,000.20

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Solution

The fourth proportional to 764,904.20, 1,147,356.30 and 345,000.20 is: 517,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,904.20 : 1,147,356.30 = 345,000.20 : x
  2. Step 2: Convert to fraction form
    764,904.20/1,147,356.30 = 345,000.20/x
  3. Step 3: Cross multiply
    764,904.20x = 1,147,356.30 × 345,000.20
  4. Step 4: Simplify right side
    764,904.20x = 395,838,152,971.26
  5. Step 5: Solve for x
    x = 395,838,152,971.26/764,904.20
  6. Step 6: Final answer
    x = 517,500.30

Related Problems

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Half scale
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Double scale
Find fourth proportional to 764,905.20, 1,147,357.80 and 345,001.20
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.