Home / 745,241.78-1,028,437.54-405,712.46

Finding the Fourth Proportional to 745,241.78, 1,028,437.54 and 405,712.46

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Solution

The fourth proportional to 745,241.78, 1,028,437.54 and 405,712.46 is: 559,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,241.78 : 1,028,437.54 = 405,712.46 : x
  2. Step 2: Convert to fraction form
    745,241.78/1,028,437.54 = 405,712.46/x
  3. Step 3: Cross multiply
    745,241.78x = 1,028,437.54 × 405,712.46
  4. Step 4: Simplify right side
    745,241.78x = 417,249,918,153.28
  5. Step 5: Solve for x
    x = 417,249,918,153.28/745,241.78
  6. Step 6: Final answer
    x = 559,885.30

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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.