Home / 745,258.80-1,028,461.04-405,729.52

Finding the Fourth Proportional to 745,258.80, 1,028,461.04 and 405,729.52

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Solution

The fourth proportional to 745,258.80, 1,028,461.04 and 405,729.52 is: 559,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,258.80 : 1,028,461.04 = 405,729.52 : x
  2. Step 2: Convert to fraction form
    745,258.80/1,028,461.04 = 405,729.52/x
  3. Step 3: Cross multiply
    745,258.80x = 1,028,461.04 × 405,729.52
  4. Step 4: Simplify right side
    745,258.80x = 417,277,004,097.90
  5. Step 5: Solve for x
    x = 417,277,004,097.90/745,258.80
  6. Step 6: Final answer
    x = 559,908.86

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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.