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Finding the Fourth Proportional to 509,988.80, 764,983.20 and 307,035.20

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Solution

The fourth proportional to 509,988.80, 764,983.20 and 307,035.20 is: 460,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,988.80 : 764,983.20 = 307,035.20 : x
  2. Step 2: Convert to fraction form
    509,988.80/764,983.20 = 307,035.20/x
  3. Step 3: Cross multiply
    509,988.80x = 764,983.20 × 307,035.20
  4. Step 4: Simplify right side
    509,988.80x = 234,876,769,808.64
  5. Step 5: Solve for x
    x = 234,876,769,808.64/509,988.80
  6. Step 6: Final answer
    x = 460,552.80

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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.