Home / 745,072.16-1,028,287.11-418,438.85

Finding the Fourth Proportional to 745,072.16, 1,028,287.11 and 418,438.85

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Solution

The fourth proportional to 745,072.16, 1,028,287.11 and 418,438.85 is: 577,494.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,072.16 : 1,028,287.11 = 418,438.85 : x
  2. Step 2: Convert to fraction form
    745,072.16/1,028,287.11 = 418,438.85/x
  3. Step 3: Cross multiply
    745,072.16x = 1,028,287.11 × 418,438.85
  4. Step 4: Simplify right side
    745,072.16x = 430,275,270,636.79
  5. Step 5: Solve for x
    x = 430,275,270,636.79/745,072.16
  6. Step 6: Final answer
    x = 577,494.77

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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.