Home / 745,292.60-1,028,469.90-405,760.12

Finding the Fourth Proportional to 745,292.60, 1,028,469.90 and 405,760.12

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Solution

The fourth proportional to 745,292.60, 1,028,469.90 and 405,760.12 is: 559,930.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,292.60 : 1,028,469.90 = 405,760.12 : x
  2. Step 2: Convert to fraction form
    745,292.60/1,028,469.90 = 405,760.12/x
  3. Step 3: Cross multiply
    745,292.60x = 1,028,469.90 × 405,760.12
  4. Step 4: Simplify right side
    745,292.60x = 417,312,070,040.39
  5. Step 5: Solve for x
    x = 417,312,070,040.39/745,292.60
  6. Step 6: Final answer
    x = 559,930.52

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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.