Home / 620,921.30-929,999.55-510,329.30

Finding the Fourth Proportional to 620,921.30, 929,999.55 and 510,329.30

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Solution

The fourth proportional to 620,921.30, 929,999.55 and 510,329.30 is: 764,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,921.30 : 929,999.55 = 510,329.30 : x
  2. Step 2: Convert to fraction form
    620,921.30/929,999.55 = 510,329.30/x
  3. Step 3: Cross multiply
    620,921.30x = 929,999.55 × 510,329.30
  4. Step 4: Simplify right side
    620,921.30x = 474,606,019,351.82
  5. Step 5: Solve for x
    x = 474,606,019,351.82/620,921.30
  6. Step 6: Final answer
    x = 764,357.77

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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.