Home / 745,293.60-1,028,471.28-405,761.12

Finding the Fourth Proportional to 745,293.60, 1,028,471.28 and 405,761.12

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Solution

The fourth proportional to 745,293.60, 1,028,471.28 and 405,761.12 is: 559,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,293.60 : 1,028,471.28 = 405,761.12 : x
  2. Step 2: Convert to fraction form
    745,293.60/1,028,471.28 = 405,761.12/x
  3. Step 3: Cross multiply
    745,293.60x = 1,028,471.28 × 405,761.12
  4. Step 4: Simplify right side
    745,293.60x = 417,313,658,460.63
  5. Step 5: Solve for x
    x = 417,313,658,460.63/745,293.60
  6. Step 6: Final answer
    x = 559,931.90

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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.