Home / 745,259.04-1,028,456.72-405,727.28

Finding the Fourth Proportional to 745,259.04, 1,028,456.72 and 405,727.28

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Solution

The fourth proportional to 745,259.04, 1,028,456.72 and 405,727.28 is: 559,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,259.04 : 1,028,456.72 = 405,727.28 : x
  2. Step 2: Convert to fraction form
    745,259.04/1,028,456.72 = 405,727.28/x
  3. Step 3: Cross multiply
    745,259.04x = 1,028,456.72 × 405,727.28
  4. Step 4: Simplify right side
    745,259.04x = 417,272,947,603.32
  5. Step 5: Solve for x
    x = 417,272,947,603.32/745,259.04
  6. Step 6: Final answer
    x = 559,903.24

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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.