Home / 831,547.78-1,147,535.82-449,574.56

Finding the Fourth Proportional to 831,547.78, 1,147,535.82 and 449,574.56

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Solution

The fourth proportional to 831,547.78, 1,147,535.82 and 449,574.56 is: 620,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,547.78 : 1,147,535.82 = 449,574.56 : x
  2. Step 2: Convert to fraction form
    831,547.78/1,147,535.82 = 449,574.56/x
  3. Step 3: Cross multiply
    831,547.78x = 1,147,535.82 × 449,574.56
  4. Step 4: Simplify right side
    831,547.78x = 515,902,911,360.74
  5. Step 5: Solve for x
    x = 515,902,911,360.74/831,547.78
  6. Step 6: Final answer
    x = 620,412.83

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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.