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Finding the Fourth Proportional to 620,920.80, 929,998.80 and 510,328.80

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Solution

The fourth proportional to 620,920.80, 929,998.80 and 510,328.80 is: 764,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,920.80 : 929,998.80 = 510,328.80 : x
  2. Step 2: Convert to fraction form
    620,920.80/929,998.80 = 510,328.80/x
  3. Step 3: Cross multiply
    620,920.80x = 929,998.80 × 510,328.80
  4. Step 4: Simplify right side
    620,920.80x = 474,605,171,605.44
  5. Step 5: Solve for x
    x = 474,605,171,605.44/620,920.80
  6. Step 6: Final answer
    x = 764,357.02

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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.