Home / 509,984.30-764,976.45-307,030.70

Finding the Fourth Proportional to 509,984.30, 764,976.45 and 307,030.70

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Solution

The fourth proportional to 509,984.30, 764,976.45 and 307,030.70 is: 460,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,984.30 : 764,976.45 = 307,030.70 : x
  2. Step 2: Convert to fraction form
    509,984.30/764,976.45 = 307,030.70/x
  3. Step 3: Cross multiply
    509,984.30x = 764,976.45 × 307,030.70
  4. Step 4: Simplify right side
    509,984.30x = 234,871,254,927.02
  5. Step 5: Solve for x
    x = 234,871,254,927.02/509,984.30
  6. Step 6: Final answer
    x = 460,546.05

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Half scale
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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.