Home / 745,393.38-1,028,642.86-405,861.63

Finding the Fourth Proportional to 745,393.38, 1,028,642.86 and 405,861.63

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Solution

The fourth proportional to 745,393.38, 1,028,642.86 and 405,861.63 is: 560,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,393.38 : 1,028,642.86 = 405,861.63 : x
  2. Step 2: Convert to fraction form
    745,393.38/1,028,642.86 = 405,861.63/x
  3. Step 3: Cross multiply
    745,393.38x = 1,028,642.86 × 405,861.63
  4. Step 4: Simplify right side
    745,393.38x = 417,486,667,847.46
  5. Step 5: Solve for x
    x = 417,486,667,847.46/745,393.38
  6. Step 6: Final answer
    x = 560,089.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.